Which of the following is an extrusive igneous rock that contains so many air pockets that it often floats in water

a.) obsidian

b.) granite

c.) gabbro

d.) pumice

If a person has type B blood, which statement describes the antibodies present in his or her blood? Only anti-A antibodies are present. Only anti-B antibodies are present. Both anti-A and anti-B antibodies are present.

People with diabetes often receive insulin injections. What effect does insulin have on the body

Which of the following statements is NOT part of the cell theory? Group of answer choices The human body is composed of 50 to 100 trillion cells. The activity of an organism depends on its collective cellular activities.

What can be said about prokaryotes and eukaroytes? A. Both of these cell types contain genetic material. B. Prokaryotes always have a nucleus, but eukaryotes don't. C. Prokaryotes don't grow or respond to their environment, but eukaryotes do. D.

The stems and fruits of pineapple plants contain a group of protein-diresting enzymes collectively melain and often used as an anti-browninp agent for frujte and ds an anti-browning agent for fruits and vegetables, Fruits and bles brown when they

Darwin argued that the beak size and shape of Galapagos finch species was related to their a. body size. b. food source. c. time of reproduction. d. flight pattern.

What is an earth revolution, what shape is it's path, and how long it last

Mitosis and meiosis are methods of cell division. Which of the following is true of these two methods? A. Meiosis involves only one division, while mitosis involves two divisions. B.

What is empirical evidence and what is it not

What is a theory in biology