Match the following:
part a
a. afferent arterioles
b. peritubular capillaries
c. vasa recta
d. glomerular capillaries
e. efferent arterioles
part b
1. play a role in urine concentration.
2. may lead into meandering vessels or bundles of long straight vessels.
3. fenestrated vessels that allow passage of all plasma elements but not blood cells.
4. low pressure, porous vessels that reabsorb solutes and water from the tubule cells.
5. high pressure vessel that forces fluid and solutes into the glomerular capsule.

carbohydrates: (starches and sugars) composed of carbon, hydrogen, and oxygen.

lipids: (fats, oils, and waxes) are made of carbon and hydrogen atoms.

nucleic acids: contain hydrogen, oxygen, nitrogen, carbon, and phosphorus. they are polymers of nucleotides. a nucleotide has three parts, a 5-carbon sugar, a phosphate     (-po⬇️4) group, and a nitrogenous base.

proteins: made up of nitrogen, carbon, hydrogen, and oxygen. they are polymers of amino acids.

the correct answer is:

a population changes in response to a change in the environment.

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

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