A scientific theory is an explanation that

a-has been published in a journal or book.

b-predicts what will happen.

c-has been tested by many observations.

d-a scientist has tested with an experiment.

When you lift an object, you do work on the object?

Which communities do early colonizers form?

In what way has the confusion between English and metric systems resulted in serious problems? Question 5 options: A) It has affected the fates of a space probe and a commercial airline flight.

What would happen to the mass of a cell in a hypertonic, isotonic and hypotonic?

Which of the following statements about weather along mountain ranges is correct?

Tp-21 gasoline and propane fumes are most likely to accumulate in what part of the boat?

Differences between the process of aerobic respiration and fermentation

John places a dried bean with a mass of 1.50 g in a cup of water and allows it to sit overnight. The next day he takes the bean out and dries off the excess water and finds the new mass to be 1.85 g.

Which of the following statements is true? a) When you add heat to a substance, its temperature usually increases. b) When a substance gives off heat, its temperature increases. c) Heat and temperature are the same.

What kinds of changes in a cell do second messengers usually causes?