SCIENCE

Question 1

. A biologist uses the terrarium shown to model the interactions of plants and animals in a forest ecosystem.

Identify one benefit of using this model to study organism interactions

Identify one limitation of using this model to study organism interactions.

Answer 1

→ It makes it easier for scientists to collect data and control the experiments.

→ It is too simple and does not cover all interactions happening in nature.

Question 2

9. Summarize the carbon cycle.

Answer 2

Carbon Cycle: When fossil fuels are burned, CO₂ is released into the atmosphere. When there’s a lot of CO₂ in the air, it dissolves in ocean water, forming carbonic acid.

Question 3

Based on the carbon cycle, hypothesize how the combustion of fossil fuels affects the amount of carbon dioxide in the ocean. Justify this hypothesis.

Answer 3

→ The more fossil fuels are burned, the more CO₂ is released, increasing the amount of CO₂ in the ocean.

Question 4

Testing the Hypothesis:

Answer 4

Measure CO₂ levels in air and water, and check the pH of the water.

Question 5

Photosynthesis:

Answer 5

photosynthesis: process used to obtain energy from the sun; makes food for plants; important for cells because food provides energy to fuel activities in the plant

• Two important processes that process used to obtain energy from the sun; makes food for plants; important for cells because food provides energy to fuel activities in the plant

Question 6

Cellular Respiration:

Answer 6

Plants break down food to release energy and produce CO₂.