A catabolic reaction is one in which large molecules are broken down into smaller molecules.
True
False

Overall, the population shift in South Africa has had a negative impact on agriculture, leading to a decline in the sector and decreased food security for rural communities.

Population refers to the total number of individuals of a particular species or group living in a specific area or region. In the context of human populations, it refers to the number of people living in a particular geographic area or country. Population can also refer to subgroups within a larger population, such as age groups, ethnic or racial groups, or socioeconomic groups. Population can be measured and analyzed in various ways, including through demographic data such as birth and death rates, migration patterns, and population density.

Here,

Over the past 50 years, there has been a significant population shift in South Africa, with many people moving from rural areas to urban areas in search of better economic opportunities, education, and healthcare. This trend is known as urbanization and is a common phenomenon in many developing countries.

As people move from rural areas to urban areas, the population density in urban areas increases, while rural areas become less populated. This population shift has had a significant impact on agriculture in South Africa. As more people move to cities, there is less demand for agricultural products, leading to a decline in the agricultural sector. This has resulted in the loss of agricultural land, reduced productivity, and decreased food security for rural communities.

In addition, the population shift has also led to changes in land use. As urban areas expand, they often encroach on agricultural land, leading to land fragmentation and reduced agricultural productivity. This can also lead to conflicts between urban and rural communities over land use and resource allocation.

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Answer:

the answer is probability

Explanation:

Answer: yes atom is the smallest level of organization

Explanation:

The experiment can be used to investigate the influence of light intensity on the rate of photosynthesis.

To investigate the influence of light intensity on the rate of photosynthesis.

The amount of oxygen, or the rate of bubble formation, increases as light intensity increases (the distance between the lamp and the plant decreases). This shows that photosynthesis accelerates as the light intensity rises.

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The energy is related to the change of state represented by the model by: D. Atoms lose energy as a gas changes to a liquid.

A model of the transition from a gas to a liquid is shown in the accompanying image. It demonstrates how atoms or molecules change from being widely scattered as in a gas to being concentrated as in a liquid.

The atoms in this process move from a higher-energy state  to a lower-energy state releasing or losing energy in the process. The most common kind of energy loss is heat.

Therefore the correct option is d.

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From this cross of individuals that are heterozygous for a particular trait, the expected genotypic ratio of the F1 generation would be 1 AA: 2 Aa: 1 aa. The expected phenotypic ratio would be 3 individuals with the dominant trait (A_) to 1 individual with the recessive trait (aa).

Consider a cross between two individuals that are heterozygous for a particular trait.

Let A represent the dominant allele and a represent the recessive allele.

The genotypes of the parent generation (P generation) are Aa × Aa.

Punnett square for this cross:

       |  A   |   a   |

-------|------|------|

  A   |  AA  |   Aa  |

-------|------|------|

  a   |  Aa  |   aa  |

-------|------|------|

The Punnett square shows the possible combinations of alleles from the parent generation and predicts the genotypes and phenotypes of the offspring in the F1 generation.

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Answer: Positive:

1. Keep humans alive

2. Adequate food

Negative:

1. pollution

2. over population

Explanation:

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Answer:

A thermos keeps cold things cold in the same way. It doesn't contain some kind of cooling device. The same vacuum that keeps hot things hot keeps cold things cold. Heat that might otherwise transfer to the cold contents of the thermos is prevented from reaching it because of the vacuum between the thermos walls.

Today's thermoses are constructed much more sturdily than those in the past. The first thermoses featured metal exteriors with glass interior walls. These thermoses often ended up getting broken when accidentally dropped.

Answer:

Waning

Explanation:

Or more precisely Waning Gibbous

The correct answer is OD. The offspring will show four different combinations of the dominant and recessive traits.

When two individuals are heterozygous for two characteristics, it means that they carry one dominant allele and one recessive allele for each trait. During gamete formation, these alleles can segregate in different ways and combine in various combinations in the offspring.

Using a Punnett square to represent the possible gamete combinations, we can determine that there are four different combinations of dominant and recessive traits that can be observed in the offspring:

Therefore, the correct answer is that the offspring will show four different combinations of the dominant and recessive traits (OD).

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Those with one copy of the dominant allele, which might come from only one parent, will have a dominant phenotype.

In people who only have one copy of allele, which could also come from one parent, a dominant allele results in a dominant phenotype. A recessive allele requires two copies—one from each parent—in order to result in a recessive phenotype in the individual.

A capital letter is used to identify a dominant allele (A versus a). The combinations are AA, Aa, and aa because each parent contributes one allele. The dominant trait will be phenotypically displayed in offspring with either an AA or an Aa genotype, while the recessive trait will be expressed in aa individuals.

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Answer:

it is realesed slowly I think sorry if its not the answer I haven't been in bio in 2 years

Answer:

They waited before crossing a busy street

Explanation:

Assume the graph looks like the one below.

It shows that, from Point B to C, the distance they were from home did not change.  They had stopped.

A possible interpretation is that they waited before crossing a busy street.

If they had begun accelerating, BC would have been steeper than AB.

If they had slowed their walk, BC would still point up. However, its slope would be less than that of AB.

If they had returned home, BC would point down and to the right.

The effects of the innovative finishing materials listed below are:

Innovative Finishing Materials are materials that are used for modern construction.

They are used to beautify and add finesse to construction works.

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Answer:

Alcohol, distractions while driving (ex. texting), sleepiness, drugs (marijuana), etc.

Explanation:

Not sure if this helps, but hopefully it does.

Answer:

Alcohol drugs and texting while driving

Explanation:

Hope this helps :)

BIOLOGY > CELL BIOLOGY > PARTS OF THE CELL

EXPLANATION:

The human brain holds information that relates to managing everyday life from both the conscious and subconscious. It holds information about the bodily functions that happen voluntarily and involuntarily. Much like the brain, the nucleus holds genetic information needed by the cell to make proteins and controls the organelle functions.

ANSWER: A.

** B is only true for the human brain. C is only true for cells. D is not a function of the human brain.

∵∴∵answer∵∴∵

HAWK

∵∴∵description∵∴∵

I love Hawk, he is so cool, and the way his feathers move is awesome. I also like the way he is not a surface lvl character. not going to spoil anything but he is really cool.

    /.)                                        (.\

   /)\|                                        |/(\

 //)/    hope this helps -Tom   \(\\

/'"^"                                           "^"`\

I would like brainliest if I deserve it plz

Answer:

Explanation:

Answer:

Jiro!! she is so COOL!!!

Explanation:

Answer:

Scientists show evidence that nitrogen acquired during Earth's formation came from both the inner and outer regions of the protoplanetary disk. Nitrogen is a volatile element that, like carbon, hydrogen and oxygen. Nitrogen makes up 78 per cent of the air we breathe, and it's thought that most of it was initially trapped in the chunks of primordial rubble that formed the Earth. When they smashed together, they coalesced and their nitrogen content has been seeping out along the molten cracks in the planet's crust ever since.

Tim used a chemical control method known as pesticide application.

Pesticide application involves the use of chemicals to control or eradicate pests, such as insects, fungi, and weeds. In Tim's case, he applied a pesticide to the outer layer of his crop stems to control the non-native fungus that had affected his crops. Pesticides can be applied in various forms, such as sprays, dust, and granules.

The type of pesticide used depends on the target pest and the crop being protected. While chemical control methods such as pesticide application can be effective, they also have potential drawbacks, such as the development of pesticide resistance in the targeted pest populations and the risk of harming non-target organisms and the environment.

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Answer:

B

Explanation:

i am sorry if this is wrong

The following pieces of evidence does not mid-ocean ridges are formed Mid-ocean ridges are found on the bottom of most oceans.

The central parts of the oceans have mid-ocean ridges. The mid-ocean ridges are volcanic underwater mountain ranges.

There is constant propelling of magma, and as the magma cools off quickly it creates new crust.

This results in the mid-ocean ridges gaining heights of up to 1.5 km above the surrounding area.

So, option B is correct.

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Answer:

squamous epithelium consists of a single layer of flat cells. It is found in lungs,heart and blood vessels.It allows the movement of materials across it.

stratified epithelium has many layer of flat cells.It is present in lining of oesophagus and mouth and also over the skin

The cell membrane's inside is hydrophobic, meaning that water won't cling to it. In order to effectively separate fluid inside the cell from fluid outside the cell, phospholipids form a two-layer cell membrane.

Large hydrophilic polar or ionic molecules find it difficult to pass through the phospholipid bilayer. The cell membrane prevents the passage of any size charged atoms or molecules.

While the tails (the lipid component) are non-polar, the heads (the phospho part) are polar. The tails, which face the inside of the cell membrane, are "hydrophobic" (fearful of water), whereas the heads, which make up the exterior and inner linings, are "hydrophilic" (lovers of water).

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The example that includes only chemical changes that occur in the digestive process is the reaction of saliva, stomach acid, bile, and pancreatic juices with food. Option D.

Chemical changes refer to changes to the chemical properties of substances. In biological reactions, these substances are referred to as reactants.

Chemical changes are different from physical changes. In physical changes, only the physical properties of substances are altered while their chemical properties remain intact.

When a substance changes chemically, its physical properties most often change along. However, this is not in all cases.

Thus, looking at the examples given, their classification into either physical or chemical changes is as follows:

When saliva, stomach acid, bile, and pancreatic juices react with food, the chemical properties of food change because the enzymes convert different components of food from one form to another as part of the process of digestion.

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Science teachers consider practical sciences to be a valuable component of science education for several reasons:

Hands-on Learning: Practical sciences provide students with the opportunity to engage in hands-on learning experiences. This approach allows students to actively explore and manipulate materials, conduct experiments, and make observations.

Example: In a biology class, students may conduct a dissection of a preserved specimen to study the anatomy and structure of organisms. By physically dissecting and examining the different organs and systems, students gain a tangible understanding of the subject matter.

Application of Theory: Practical sciences enable students to apply theoretical knowledge acquired in the classroom to real-world situations. By engaging in practical activities, students can bridge the gap between abstract concepts and their practical applications, fostering a more comprehensive understanding of scientific principles.

Example: In a chemistry class, students might perform experiments to understand chemical reactions and concepts like stoichiometry. By actually mixing and observing different substances, measuring quantities, and analyzing the results, students can see how theoretical concepts translate into practical applications.

Development of Scientific Skills: Practical sciences help students develop essential scientific skills, such as critical thinking, problem-solving, observation, data analysis, and communication. Through practical activities, students learn to formulate hypotheses, design experiments, collect and analyze data, draw conclusions, and communicate their findings effectively.

Example: In a physics class, students could design and conduct an experiment to investigate the relationship between force and motion. By planning the experiment, taking measurements, analyzing the data, and presenting their findings, students enhance their scientific skills and develop a deeper understanding of physics concepts.

Engagement and Motivation: Practical sciences often increase student engagement and motivation in science education. Hands-on activities provide a more interactive and dynamic learning environment, making science more interesting and accessible to students. It can spark curiosity, promote active participation, and cultivate a sense of wonder and excitement about the natural world.

Example: In an environmental science class, students may visit a local ecosystem to conduct field observations, collect samples, and analyze the data they gather. By immersing themselves in the real environment and actively participating in the scientific process, students are more likely to be motivated and engaged in their learning.

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A cell is placed in a saltwater solution. The water inside the cell will leave the cell, decreasing the size of the cell, meaning that the saltwater solution is hypertonic to the cell (option A).

Osmosis is the net movement of solvent molecules, usually water, from a region of lower solute concentration to a region of higher solute concentration through a partially permeable membrane.

If a cell is placed in a saltwater solution, it means the concentration of the solute outside the cell is more than that of the cell.

As a result, water will leave the cell (higher concentration) to the extracellular salt solution. It can be said that the salt solution is hypertonic.

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The three main characteristics of angiosperms are flowers, fruit, and seeds.

Firstly, flowers are reproductive structures unique to angiosperms. They serve as the site for pollination, where pollen grains are transferred from the male reproductive organs (anthers) to the female reproductive organs (stigma). This process leads to fertilization and the development of seeds.

Secondly, angiosperms produce fruit, which is formed from the ovary of the flower after fertilization. Fruits serve as protective structures for the developing seeds and aid in seed dispersal by various means, such as wind, water, animals, or self-dispersal mechanisms.

Lastly, angiosperms produce seeds as part of their reproductive cycle. Seeds contain the embryonic plant, stored nutrients, and a protective seed coat. This adaptation allows for the survival and dispersal of offspring to new locations.

Angiosperms are a diverse group of plants and can be further classified into monocots and dicots based on the number of cotyledons (embryonic seed leaves). Monocots have a single cotyledon, while dicots have two cotyledons.

In summary, the three main characteristics of angiosperms are flowers for reproduction, fruit for seed protection and dispersal, and seeds for embryonic development and propagation.

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Answer:

sperm are produced in testes. sperm leaves through the semen duct. In the semen duct,fluids from the glands are added to the sperm. semenis releasedfrom the penis

Answer:

4    semen is realeased through the penis

1      sperm is produced in the testes

2      sper leaves the semen duct

3      fluids from the glands add to the sperm

Explanation:

Concept Map: 1. Electrical Stimulation: The electrical stimulation generated by the sinoatrial node (SA node) or an artificial pacemaker causes ion channels in the cardiac pacemaker cell to open, allowing for the flow of ions into and out of the cell.

Electrical stimulation (ES) is a form of treatment that utilizes a low-level electrical current to stimulate nerve endings in order to decrease pain, increase muscle strength and improve circulation. Electrical stimulation works by delivering a low-level electrical current to the target area of the body.  

2. Action Potential: The action potential is generated when positively charged ions, such as sodium and calcium, enter the cell and cause the membrane potential to become depolarised.

3. Repolarisation: Potassium ions then leave the cell and cause the membrane potential to become repolarised.

4. Conduction Pathway: The action potential then travels along the conduction pathway, which includes the atrioventricular node (AV node), bundle of His, and Purkinje fibers.

5. Contraction: When the action potential reaches the contractile cells, calcium ions enter the cells, causing the cells to contract.

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