Air pollution is caused by A. the sun. B. heavy rainfall. C. human activities but not natural events. D. natural events and human activities.

A plant is starting to fall over because the plant can no longer support its own weight. Students want to find out why this is happening. Which of the following is a good hypothesis for their experiment? a. The plant is producing cellulose molecules.

Different mating habits cause two groups within a population to be less likely to mate with each other. as a result, reproductive isolation occurs between the two groups. what does this cause?

Which type of molecule contains high energy bonds and is used for long-term storage

Are found in the blood and include sodium and potassium?

You are starting a Ph. D. program in evolutionary biology, and you want to observe evolution in action. To plan your dissertation on adaptive radiation, you need to find a study site.

Explain why all mutations are not necessarily harmful

Which characteristics are common to most salamanders? Check all that apply. A) They undergo internal fertilization. B) They lose their tails as adults. C) They have wet, moist skin. D) They have long, strong legs. E) They begin life with gills.

What is the main cause of cancer

Define the word homeostasis in your own words

What does it mean when the genetic code is degenerative?