In science writing, what is the purpose of historical points of reference? to help readers connect prior knowledge to new discoveries
to help readers sympathize with past scientists
to help readers understand an especially difficult concept or idea
to help readers understand the complete history of a scientific idea

Which of the following is the most likely outcome of global warming

In a lab, scientists grew several generations of offspring of a plant using the method shown. what conclusion can you make about the offspring? a. they formed from meiosis and mitosis. b. they have half the number of chromosomes as their parent. c. they have low genetic variability among them. d. they will be able to reproduce only after they grow flowers.

When a population split into two subgroups what is most likely to cause the subgroups to develop different traits?