Why is the ocean blue?
a. it absorbs visible blue light. b. the waves cause an optical illusion. c. it reflects yellow light and green light. d. it reflects visible blue light.

What would be the result if crossing over did not happen during meiosis in humans? a. there would be less genetic variation in humans. b. parents would be more likely to look like their children. c. the human population could not reproduce. d. children would have more chromosomes.

Hedgerows have created a new ecosystem within britain’s a. farms b. cities c. forests d. industrial areas

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.