What units are used when describing the length of time that the universe has been expanding?

billions of years

millions of years

light years

light year kilometers

decades

Commercial plant growers artificially control the lengths of days and nights. This produces a response called A. photoperiodism. B. gravitropism. C. thigmotropism. D. phototropism.

Which of the following therapeutic methods for the treatment of sexual function difficulties involves focusing on touch and the giving and receiving of pleasure? a. masturbatory play b. sensate focus c. pleasure focus d. directed fantasy

How can substances be transported across a membrane against their concentration gradient?

Is nausea the response or the stimulus garcia?

How does the examples from redi, spallanzani, and Pasteur experiments demonstrate science as a way of knowing

If you look at the sky and see the Moon as a half-circle, what do you expect should be true about the tides that day? A. The low tides will be much lower than usual. B. The high tides will be much higher than usual. C.

What are the five evidences that a chemical change has taken place?

In frogs muscle tissue is usually grouped into large

after the brain receives information from the body's sensory receptors, what is the next step in responding to this information?

What does the endosymbiont theory explain about the origins of plant and animal cell