The tiny hollow air sacs where oxygen exchange occurs are

A. lymph nodes.

B. capillaries.

C. alveoli.

D. bronchioles.

Which of these is an enviromental effect of deforestation and farming? A) smog B) loss of habitat C) poisoning wildlife D) Use of large amounts of water

What is the difernt bettwen boys and girls puberty

Peridotite, which is composed almost entirely of dark silicate materials and is believed to make up much of earths upper mantle, has a composition that is

Which gland sits atop each kidney? A. adrenal B. thymus C. pituitary D. pancreas

During gas exchange, where does the co2, which is released from the lungs, originate?

What form of matter is made from only on type of atom material, molecule, compound, or element

In which of the following does the last stage of digestion take place and is where water is absorbed into the bloodstream? a. small intestine c. rectum b. large intestine d. gall bladder

The effects of the sympathetic nervous system (sns) are divergent, meaning that a single stimulus can have an effect on a large number of targets. in other words, when the sns is activated, all of the organs it innervates are stimulated.

Which list shows the correct order of locations and steps in protein processing? A. 1. endoplasmic reticulum (protein modification) 2. Golgi apparatus (protein packaging) 3. ribosome (protein synthesis) B. 1. ribosome (protein synthesis) 2.

old grouth forests are full of sick, diseased and decadent trees?