Which best describes work?

a. holding a pencil

b. lifting a feather

c. dropping a ball

What do the denitrifying bacteria do during the denitrifying process?

What is a testable prediction of the results of an experiment

The evolution of which characteristic allowed for the development and enlargement of complex internal organs?

Every ecosystem needs some organisms that return nutrients to the environment by breaking down the remains of other organisms. What is the name of this vital group of organisms? A. consumers B. decomposers C. parasites D. producers

Which of the following is a benefit of globalization? A. There is an increase in piracy of cargo ships in international waters. B. People do not usually venture far from where they were born. C.

What would you expect to happen if sea otters were removed from this food web? Check all that apply. The population of elephant seals would decrease. The population of kelp crabs would increase. The population of kelp would increase.

When blockages in the bloodstream read the Brian it can cause blank?

A gazelle is born with slightly longer legs which allow it to run faster than the other gazelles in the herd. This adaptation came may have come about because a. the gazelle needed to be able to run faster. b.

In a population of deer mice, the allele for white hair is recessive and the allele for brown hair is dominant.

What makes a molecule a saturated fat?