Which compound was abundant in Precambrian Earth's oceans, before complex life evolved on Earth?

A.

dissolved oxygen

B.

dissolved carbon dioxide

C.

dissolved methane

D.

dissolved ammonia

Which change in the population will mostly likely happen over time

The blood vessel that carries blood into the glomerulus is called the: afferent arteriole O vasa recta peritubular capillary O efferent arteriole arcuate artery interlobular artery

What non examples of nucleotide

Why is the catalytic activity of enzymes essential to ensure and regulate cellular metabolism?

A provider admits mrs. smith to the hospital. she is there for five days. the provider sees her each day she's in the hospital. what subcategory of e/m codes would be used for days two, three and four?

What is the source of the pressure that has caused coyotes, which were once essentially diurnal, to adjust to a more nocturnal behavior?

Ants carry dead ants out of the anthill and dump them on a "trash pile." If a live ant is painted with a chemical from dead ants, other ants repeatedly carry it, kicking and struggling, to the trash pile, until the substance wears off.

What is responsible for the structures and functions of organisms

The term 'prehistory' refers to the time before writing was invented. true or false?

What are the three types of Spatial Distribution?