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.

Rachel ate a piece of fruit and happened to drop the seeds in her backyard. after a few weeks, she saw a small plant with flowers growing in the backyard. which group does this plant belong to? a. angiosperms b. gymnosperms c. pteridophytes d. bryophytes e. chytrids

Which is the function of the hypothalamus in thermoregulation? answers: -sensor -effector -stimulus -intergrating center it's either a or c i believe

20 how are energy cycles and growth cycles related?