Human activity contributes to the extinction of species. Which is not a human activity that contributes to the extinction of a species?

a. introducing a nonnative species

b. hunting

c. fungal disease

d. cutting down forests

What chemicals originally contained in products such as refrigerants and hair sprays contributed to the depletion of the ozone layer?

Darwin developed the theory of evolution. Which of these observation is the best evidence for the theory of evolution? Humans have very diverse traits today. B) There appear to be missing links in the evolutionary chain.

Why do scientists arrange the organisms on the tree below with some organisms closer than others? A) The organisms that are closest to one another are the same organisms B) The organisms that are closest to one another evolved from each other C) The

Which scenario is an example of natural selection? •Farmers crossbreed two types of cows to produce a breed of cow that has high quality beef and can tolerate a hot climate.

In the west, what would be considered the great equalizer for African American Cowboys? Sharing of well cooked meals Working with cooperative Native Americans Working on the ranch and cattle trail with white cowboys The short trails between

Is an apple core biodegradable?

Why is zachs hair dark like his mothers and not bond like his fathers

What is Atlcin's diet and how does it work?

Which statement is incorrect? Group of answer choices All of the following are correct Muscle cells are surrounded by a branching network of transverse tubules.

What event occurs when a microbe acquires a genc mutation that allows it to resist the effects of a. Virulence b. Infection c. Antibiotic resistance d. Placebo effect