What is the predominant hypothesis why animals only appeared in the fossil record about 3 billion years after life originated?

What is the most population city?

Which statement best describes an effect of the fillbuster

What is a food chain/6067896/d633c784? utm_source=registration

Which of these changes is a benefit of using only nonpolluting sources of electricity? A. Fewer cases of asthma B. Loss of jobs related to fossil fuels C. Higher electricity prices D. More-expensive clean technologies

Earth revolves around the sun in a circle

If a bird is moving at a velocity of 70 km/h east and a car is moving at a velocity of 80 km/h east, what is the velocity of the bird relative to the passengers in the car? A. 10 km B. 10 km/h C. 10 km/h west D. 70 km/h east

Does bigfoot exist?

An observable trait in a species of frog is controlled by a single gene. The gene has only two alleles, F and f, and F shows complete dominance over f. A predator is introduced into a population of 400 frogs, of which 100 are homozygous recessive.

The area in the brain that plans, anticipates, and controls impulses and is the last part of the brain to mature is the

What event occurs prior to speciation