Charles darwin is best know for developing his theory of evolution based on his observation of what characteristic?

a. the beaks of finches

b. the scales of snakes

c. the necks of giraffes

d. the trunks of elephants

During childbirth, a hormone produced by the pituitary gland causes muscles of the mother's uterus (or womb) to contract. The more contractions there are, the more hormone is produced.

What situation results when a population of spotted salamanders in an area of vernal pools remains stable for many years and was stabilized because of resource limits?

Earth's original atmosphere probably consisted most of which gas?

Consider the diagram of a eukaryote and a prokaryote. According to cell theory, A) both are single cells that carry out the functions of life. B) both are examples of primitive cells that are not capable of reproduction.

One consequence of hypernatremia is swelling of tissues in the brain. dangerously diluted blood sodium levels. rapid drop in blood pressure. movement of water into the intracellular fluid compartment.

According to Kepler's second law, which factor is constant as a line between a planet and the sun sweeps out two equal areas at different places as it moves along its orbit? A. The amount of time B. The distance the planet moves C.

The different conservation efforts being applied to protect rainforests.

How would you classify the relationship between the different species of coral?

Which of the following illustrates intraspecific competition? A sea gull swooping down to snatch a fish from the water's surface Male red-winged blackbirds defending limited nesting sites from other males A butterfly feeding on the nectar of a

What is one disease that follows the lytic cycle?