The cladogram above diagrams the evolutionary history of chordates. Which group of animals was the first land dweller? A) birds B) mammals C) lungfish D) amphibians

Is the smallest particle of a substance that has all the properties of the substance.

Explain the logic the woodcutter uses to justify cutting some of the trees for our use.

What 3 elements make up fatty acids

George on one pair of his chromosomes has STRs of lengths 6 and 7, Stephen (his father) STRs of lengths 3 and 6, and Mary (his mother) STRs of lengths 6 and 7. Which of the following statements can be assumed with the information given? a.

You observe that your friend has dimples. dimples result from the presence of the dominant gene d; absence of dimples is a homozygous recessive condition (dd). what genotype or genotypes might your friend have

What is the policy used most by the Fed to change the money supply? a. changes in the money creation policy b. changes in the discount rate c. changes in the reserve requirements d. open market operations

Excision within the artery (of plaque from the arterial wall) is called

Which organ is a part of circulatory system? select one of the options below as your answer: a. brain b. heart c. lungs d. stomach?

Although they do not have recent common ancestors, birds and bats have similar body shapes necessary for powered flight. what pattern of evolution does this relationship represent?

The science of naming organism and putting them into classification group is?