Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction? a) The offspring will have the correct number of chromosomes when sperm and egg are joined.

b)Gametes have single function which requires less DNA to preform the function compared to somatic cells.

c)A reduction in the number of chromosomes reduces the chances for mutations that would affect the offspring.

d)The chromosomes in gametes are already replicated strands of DNA which returns the number of chromosomes to the original amount.

List two new traits (structural or behavioral) that each new species of rat might demonstrate as it adapts to the conditions on two of the four islands. choose only two islands that are described in the lesson. record the island latter and the major habitat feature of the island. then list two new traits each rat subspecies might demonstrate in order to survive the habitat on that island. note: new traits should be unique to that island and be in response to that island’s habitat feature. i cannot remember islands that were names in the lesson so only answer if you have done the lesson (5.13 life science 7b) choose 2 of the islands and describe a structural and a behavioral trait for a rat on each island so 4 total answers, 2 different structurals and 2 different behaviorals, one for each rat for each island

The pressurized plants and fungi mentioned in the video have some surprising similarities. what differences would you expect them to have?

The human body needs energy in order to carry out life processes such as breathing. where does the body get this energy? a. from eating food b. from learning about new things c. from lying in the sun d. from sleeping