Which of the following is true about renewable resources? a. they can be replaced by a healthy environment. b. there are plenty for people to use, but only for a very short time. c. using them will hurt the environment. d. they cannot be replaced after they are used up.

Ry was studying two populations of the same species of lizards. one population lived on an island and the other lived on the mainland. both populations were affected by a hurricane that hit the island and the mainland with equal force. a year later, henry was testing the gene frequency and saw a decrease in genetic variation in the island species, but not in the mainland species. which best describes a conclusion he might have reached? gene flow greatly affects small populations, but large populations can recover. genetic drift greatly affects small populations, but large populations can recover. gene flow greatly affects large populations, but small populations can recover. genetic drift greatly affects large populations, but small populations can recover.

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer