which of the following is the best explanation of why a second control group was included in this experiment

What is meant by scientific methods

Which factors afect gravitational force?

Labor is an limited resource true or false

What is difference between bacterial reproduction and viral reproduction?

Select all items that describe the Amish culture. a. speak Creole or Spanish b. wear simple clothing c. embrace technology d. live in farming communities e. use horse-drawn vehicles f. value education g. are frequent moviegoers

One pair of alleles controls eye color in fruit flies. More than ten different eye colors are possible, ranging from bright red to apricot to tan to white. What kind of inheritance is this? How do you know?

Assume that in squashes the difference in fruit weight between a 3-lb type and a 6-lb type results from three independently segregating allele pairs, A/a, B/b, and C/c. Each capital-letter allele contributes a half-pound to the weight of the squash.

What is another important difference between mitosis and meiosis? A. Mitosis can only occur in cells that are diploid (or have higher ploidy). B. Meiosis can only occur in cells that are diploid (or have higher ploidy). C.

What do "adduction" and "abduction" mean?

Which of the following statements about the 'Hobbits' of Flores is FALSE? Select one: a. All the answers are TRUE b. Hobbits were alive at the same time as modern Homo sapiens c.