Which of the following is not a fossil?

worm burrow tube from 400 million yeas ago

deer tracks left in wet mud this morning

marine shell that is 1 million years old

all of the above are fossils

5. What happens as pigments are mixed together? less light is able to hit the mixture more colors are reflected and fewer colors are absorbed more light is able to hit the mixture more colors are absorbed and fewer colors are reflected

Which material heated up the most rapidly? How hot did it get? How long did it take? Why?

How does negative feedback work

Which statement describes the process the zygote undergoes immediately after fertilization?

Explain the type of graph that could be used for the data below.

In humans, what happens when the breathing rate increase's

This is the process that releases energy by breaking down food molecules in the presence of oxygen.

What happens during photosynthesis? a. heterotrophs consume atp. b. autotrophs consume carbohydrates. c. autotrophs produce carbohydrates. d. heterotrophs produce atp?

How do decomposers obtain energy?

How is parenting a lifelong job? Explain.