How does abrasion shape a shoreline?
rock fragments tumble in the water, wearing away material that is softer than they are.
wind picks up sand and blows it along the shoreline, changing the shape of the beach.
waves force air into cracks in the rock, breaking them apart.
currents flow parallel to the shore, moving large amounts of sediment.

Which of the following is one of the four conditions necessary for natural selection to occur in a population? fewer organisms are born than the habitat can support mutation does not occur organisms have identical characteristics variation is inherited

During endocytosis, cells expel what they don't need take in what they need shrink due to loss of water

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them