In this food chain: worms--> bluebirds--> hawks, what would happen to hawks if bluebirds became extinct?

a. the hawk population would increase

b. the hawk population would decrease

c. the hawk population would stay the same

d. cannot be determined.

B. The hawk population would decrease

Explanation:

Without food the hawks would either have to adapt to eat new food, or decline in numbers until extinction.

a. Photosynthesis

b. Oxygen

c. Light from the lamp

Explanation:

a. The process that is occurring in the plant's cell to produce the gas in the bubble is photosynthesis. The process involves the use of inorganic substances such as carbon dioxide and water in the presence of light to manufacture carbohydrates. Oxygen is evolved in the process. The equation for the process is as below:

b. The gas produced by the plant is oxygen as shown in the equation above.

c. The source of energy the plant is using to conduct the process is the light from the lamp. Light catalyzes the excitation of photosystems, causing the release of electrons that causes the splitting of water.