help with science homework!!! WILL GIVE BEST ANSWER AND 60 POINTS?

1. Organisms of one species living together in the same place at the same time are called a ____. (1 point)

community

population

niche

all of the above

2. During photosynthesis, light energy becomes ____ energy. (1 point)

soil life

chemical

mechanical

pyramid

3. Nitrogen in the soil is used by ____. (1 point)

plants

animals

both a and b

neither a nor b

4. As you move upward, from level to level, in an energy pyramid, energy _____. (1 point)

decreases

increases

stays the same

is destroyed

5. Which of the following is a biotic factor? (1 point)

sunlight

water

mammals

soil

6. Which of these biomes matches the following description?

"Dominant plants lose their leaves every autumn."

(1 point)

tundra

grassland

temperate deciduous forest

temperate rain forest

7. All green plants are _____. (1 point)

producers

consumers

decomposers

none of the above

Note: This item has been reviewed and is scheduled to be updated. All students will receive full credit for any response to the following.

8. The presence of predators usually _____ the number of different species that can live in an ecosystem. (1 point)

increases

decreases

does not affect

doubles

9. _____ is the term used to describe the way an organism survives, including its habitat, how it obtains food and shelter, and how it avoids danger. (1 point)

Symbiosis

Niche

Parasitism

Mutualism

10. The study of interactions between organisms and their environment is called _____. (1 point)

an ecosystem

the biosphere

ecology

a community

True or False

11. Ecological succession can begin when seeds are carried to bare areas by birds or the wind. (1 point)

true

false

12. The tropical rain forest biome has a diverse and varied number of organisms living within.

(1 point)

true

false

Short Answer

Note: Your teacher will grade your responses to questions 13–15 to ensure you receive proper credit for your answer.

13. Compare a climax community to a pioneer species. (3 points)

14. Why must a producer be at the base of every food chain? (3 points)

15. What are some ways that population size is limited within an ecosystem? (3 points)

1 Answer

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  • ?
    Lv 7
    8 years ago
    Favorite Answer

    I will answer your question if you will explain how you are able to give BEST ANSWER AND 60 POINTS.

    Please edit your question with this information.

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