Biology, 24.01.2020 08:31, codyfore141
Thousands of years ago in a land far away, plate tectonics created a mountain range that separates a population of red parrots. on the east side of the mountain, the recessive trait of blue feathers was selected for because it the parrots avoid predators. however; on the west side of the mountain the parrots kept the trait of red feathers. one day, to escape a storm, a small number of blue parrots migrated to the west side of the mountain where the red parrots dwell. identify and explain the evolutionary mechanism at work in this scenario, then predict how the populations of parrots will be affected by the migration.
Answers: 1
Biology, 21.06.2019 21:30, irishdreamer0689
List the advantages and disadavantages of the switch from persistent chlorinated hydrocarbon pesticides (such as ddt) to nonpersistent organophosphate pesicides. have the benefits of the switch outweighed the disadvantages? explain.
Answers: 3
Biology, 22.06.2019 14:30, mariap3504
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
Answers: 3
Biology, 22.06.2019 19:00, kcarstensen59070
Question 1 which of the following allows cells to take in fluids? a. phagocytosis b. pinocytosis c. exocytosis d. receptor-mediated endocytosis question 2 molecules move along their concentration gradient (from areas of high concentration to low concentration) using active transport mechanisms. a. true b. false question 3 which of the following powers active transport (ie. provides the energy for)? a. glucose b. transport proteins c. atp d. phospholipids question 4 what type of lipid is a major component of the plasma membrane? a. cholesterol b. phosopholipids c. proteins d. triglycerides
Answers: 2
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