Living organisms draw their essential elements from

a. the atmosphere.

b. the lithosphere.

c. the atmosphere and lithosphere. and) the atmosphere, lithosphere, and hydrosphere.

Mitosis is represented by which numbered part (s) of the cycle?

In mammals, air enters lungs through tubes called, which branch into smaller tubules called, which extend out to tiny air sacs called. trachea; bronchioles; spongy tissue. bronchi; bronchioles; alveoli. bronchi; alveoli; gills.

Which barrier must o2 and co2 cross to pass between air and blood inside the lungs:?

Suppose you didn't water a plant for two weeks. What do you expect the stomata would do

10. In 4-6 sentences describe why you think a business would synthesize and sell DNA, who would their customers be, and a list of possible uses for the DNA they are creating and selling?

What is the difference between bacillus, coccus, and spirillum

What is always true of scientific practices a. They prove a hypothesis to be correct b. They involve steps performed in the same order c. They seek to produce verifiable data d. They lead to the same interpretation

Which statement is true about the scientific method

How do cells correct errors in DNA that would disrupt their function

Which is true of oxidation? a) It is a physical process b) No change occurs in the makeup of rock c) Rocks weather at different rates d) Water freezes in cracks in rock