The majority of carbon dioxide returns to the lungs

as part of

hemoglobin.

plasma.

oxygen.

bicarbonate ions.

In predation, the animal that is hunted and eaten is the?

Infer: How might the size of a group affect its defense?

How many different codons can code for the amino acid tryptophan (Trp) ? A) 1 B) 3 C) 4 D) 6

What are the four most common elements in living things?

Nonnative species disrupt the natural variability of an ecosystem. true or false

The moon travels around Earth at a speed of about 1 km/s. Which of the following keeps the moon in orbit around Earth?

A rock at the earth's surface is primarily affected by forces of?

Who used a compound microscope to see chambers within a cork and name them cells

What is the force of resistance acting between objects in contact and tending to dampen their motion? options: 1. gravity 2. sliding force 3. friction 4. electromagnetic force

Which of the following describes a relationship of commensalism? A. A tapeworm latches itself in the intestines of a rat, feeding off all the nutrients eaten by the rat. B. Oxpecker Birds eat parasitic tricks off the backs of zebras C.