True or False, Cotton, used to make clothes, shoes, blankets, etc., comes from a plant.

Why must most antibiotics be given some time to take effect on a disease-causing population of bacteria? a.

Frederick Griffith identified the transforming principle as DNA. True False

Are virus considered liveing organisms

What are some similarities of the worm and a squid?

Scientists believe that most early mammals were: large very small medium sized none of the above

How would the ecosystem be affected if your top predators were hunted to extinction

3 ways that living creatures use lipids

Absolute dating can be determined by which of the following. Select all that apply. A. tree-ring patterns B. Earth's magnetic field C. a historian's journal D. coral growth cycle E. radioactivity F. photo comparison

What conditions cause the contractile vacuole to fill with water?

Which of the following is most likely responsible for the fact that organic molecules no longer formed spontaneously on Earth? A. The amount of UV radiation increased B. The amount of oxygen in the atmosphere increased C.