What do valleys on the surface of a planet or moon suggest about previous land features?

A.

the presence of human life forms

B.

the presence of water

C.

the presence of earthquakes

D.

the constant bombardment of asteroids

Why are lemurs, lorises, and bushbabies considered descendants of the earliest primates?

The punnett square shows the possible genotype combinations of two parents who are heterozygous for a particular trait. What is the probability of the parents having a child who is homozygous dominant for this trait?

Describe the nebular hypothesis of earth's origin

LaKeisha stepped on a piece of glass and quickly pulled her foot away from that sharp object. Which of the following are responsible for sending a message to the muscles in LaKeisha's foot, resulting in her pulling her foot away from the piece of

In peas purple is dominant to white for flower color. A purple flower is crossed with a white flower. All the offspring (over 100 plants) produce purple flowers. What is the genotype of the purple flower? •Pp •pp •PP •Either PP or Pp

What is the usual result when the ocean breaks pebbles into smaller and smaller peices

How does the hydronium ion form

Information flow in biological systems is necessary for negative (regulative) feedback to operate. Which of these examples does NOT involve flow of information providing feedback?

Matter is composed of?

What is least likely a description of the central nervous system