Which of the following best demonstrates a community? a desert with high heat and low rainfall
a pond filled with fish, turtles, algae and weeds
all of the abitoic and biotic factors found in a tropical rain forest
All of the penguins living in an area

Calvin ate a candy bar, which caused his body's blood glucose levels to become unbalanced. his body responded by initiating a feedback mechanism to return his body to homeostasis. place the steps of this feedback mechanism in order, starting with the blood glucose imbalance that occurred after calvin consumed the candy bar. a) calvin's blood glucose levels decreased. b) calvin's pancreas stopped secreting insulin. c) calvin's body cells started to take up glucose and store it as glycogen. d) calvin's blood glucose levels increased. e) calvin's pancreas started secreting insulin.

In which situations is the principle of cross-cutting relationship useful in determining relative age?

Organisms that successfully adapt will leave to grownone of the above