Question

exchanged with surroundings

1. enters the soil and water when rock breaks down in this cycle
2. makes up 78% of atmosphere
3. thin outermost zone of the earth
4. earth’s actual shape
5. sequence in which organisms consume others
6. largest population an environment can support
7. community of organisms and their abiotic environment
8. break down dead organisms

Explanation:

To solve these fill - in - the - blank questions related to Earth science and biology concepts, we analyze each one:

Question 9

When rocks break down (weathering), nutrients (such as minerals) enter the soil and water. In the nutrient cycle (like the phosphorus cycle or the nitrogen cycle), the breakdown of rocks releases minerals. So the answer could be "nutrients" (or specific nutrients like "minerals" depending on the context of the cycle, but "nutrients" is a general term that fits here).

Question 13

The gas that makes up 78% of the Earth's atmosphere is nitrogen ($N_2$). So the answer is "nitrogen".

Question 15

The thin outermost zone of the Earth is the crust. The Earth's structure has the crust (outermost, thin), then the mantle, and then the core. So the answer is "crust".

Question 17

The Earth's actual shape is an oblate spheroid. It is slightly flattened at the poles and bulges at the equator. So the answer is "oblate spheroid".

Question 18

The sequence in which organisms consume others is a food chain. A food chain shows the linear transfer of energy from one organism to another as one eats the other (e.g., grass → rabbit → fox). So the answer is "food chain".

Question 19

The largest population an environment can support is called the carrying capacity. It is determined by the available resources (food, water, space, etc.) in the environment. So the answer is "carrying capacity".

Question 20

A community of organisms and their abiotic (non - living) environment is an ecosystem. For example, a forest ecosystem includes trees (organisms) and factors like soil, sunlight, and water (abiotic environment). So the answer is "ecosystem".

Question 21

Organisms that break down dead organisms are decomposers. Examples include bacteria and fungi. They break down dead matter and recycle nutrients back into the ecosystem. So the answer is "decomposers".

Final Answers

1. nutrients (or minerals)
2. nitrogen
3. crust
4. oblate spheroid
5. food chain
6. carrying capacity
7. ecosystem
8. decomposers

Answer:

To solve these fill - in - the - blank questions related to Earth science and biology concepts, we analyze each one:

Question 9

When rocks break down (weathering), nutrients (such as minerals) enter the soil and water. In the nutrient cycle (like the phosphorus cycle or the nitrogen cycle), the breakdown of rocks releases minerals. So the answer could be "nutrients" (or specific nutrients like "minerals" depending on the context of the cycle, but "nutrients" is a general term that fits here).

Question 13

The gas that makes up 78% of the Earth's atmosphere is nitrogen ($N_2$). So the answer is "nitrogen".

Question 15

The thin outermost zone of the Earth is the crust. The Earth's structure has the crust (outermost, thin), then the mantle, and then the core. So the answer is "crust".

Question 17

The Earth's actual shape is an oblate spheroid. It is slightly flattened at the poles and bulges at the equator. So the answer is "oblate spheroid".

Question 18

The sequence in which organisms consume others is a food chain. A food chain shows the linear transfer of energy from one organism to another as one eats the other (e.g., grass → rabbit → fox). So the answer is "food chain".

Question 19

The largest population an environment can support is called the carrying capacity. It is determined by the available resources (food, water, space, etc.) in the environment. So the answer is "carrying capacity".

Question 20

A community of organisms and their abiotic (non - living) environment is an ecosystem. For example, a forest ecosystem includes trees (organisms) and factors like soil, sunlight, and water (abiotic environment). So the answer is "ecosystem".

Question 21

Organisms that break down dead organisms are decomposers. Examples include bacteria and fungi. They break down dead matter and recycle nutrients back into the ecosystem. So the answer is "decomposers".

Final Answers

1. nutrients (or minerals)
2. nitrogen
3. crust
4. oblate spheroid
5. food chain
6. carrying capacity
7. ecosystem
8. decomposers