Why is it important to cooperate with other countries on environmental issues? a. Environmental issues are not always localized.
b. Other countries have no environmental issues.
c. Other countries have more environmental issues.
d. None of the above

What is the problem in this article? what solution does the article propose?

Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.