Modern humans first appeared during the

A. most recent period of the Cenozoic era.

B. most recent period of the Mesozoic era.

C. earliest period of the Cenozoic era.

D. earliest period of the Mesozoic era.

During protein synthesis, the start codon for initiation phase in eukaryotes always starts with AUG which codes for which of the following? A• Arginine B• Tyrosine or C• Methionine

What is a biodiversity hotspot? A. Areas with high numbers of endemic species. B. Areas with high density of species C. Areas with endangered species. D. Areas that are along the equator and experience high temperatures annually.

Which parts of the atom are not allowed to move from one atom to another

The use of technology in agriculture produced what historians call the agricultural revolution. Which of the following is true of the agricultural revolution? (A) It decreased the carrying capacity of the land for humans.

What characteristics do geologists look for when observing a rock?

Which statement describes the reaction for cellular respiration? The equation is carbon dioxide + water → glucose + oxygen + water and energy is required in the form of light O The equation is glucose + oxygen carbon dioxide + water and energy is

When is energy needed to move substances across the cell membrane

Which term describes the highest pressure against the walls of the blood vessels?

How might more than one agent of physical weathering operate in the same place

What is the primary source of energy for food chains in an ecosystem? decomposers producers consumers the sun