In an ecosystem, a large number of species are dependent on one particular species of bird. the species of bird is an example of a/an species.
a. capstone
b. exotic
c. keystone
d. native

Land conservation is a worldwide priority. there are several methods to prevent the loss of land due to a variety of reasons. which method is not a way to conserve land? a) sea walls b) rainwater harvesting c) limits on clear cuts of forests d) cut and burn methods of clearing land

What is the goal of cellular respiration

In two sentences explain the differences of neutrophil and macrophage