Which statements explain what happens at deep-ocean trenches? Select two options.

Crust is formed.

Mountains are formed.

Seafloor spreading occurs.

Crust becomes molten rock.

Denser plates slide under lighter plates.

When a few drops of hydrogen peroxide are added to a living tissue such as liver or kidney, fizzing or foaming occurs immediately. Briefly explain the observation

What is a dichotomous key used to do? A. Classify organisms B. Separate coarse and fine particles C. Define terms related to plants D. Divide data into two equal levels

Which organelle is found in paramecia cells, but NOT plant cells

The scientific method can best be described as a plan of a set of

The speed of a nerve signal is fastest in the

What is the most likely cause of plate movement? A) radiation from the sun B) cold air currents on earths surface C) heat convection within the earth D) movement of ice sheets

The closer together a magnet's magnetic field lines are, a. the weaker the magnetic field. b. the stronger the magnetic field. c. the closer they are to the magnet's center. d. the closer they are to disappearing.

What are two things that carbohydrates and lipids have in common? A. Both contain C, H, O and N and are formed by dehydration snythesis. B. Both contain C, H, O and serve as a source of energy. C.

Stellar equilibrium is a balance between what two things? A. Outward and inward gravity. B. Outward pressure from light and inward pressure from heat. C. Outward pressure from hydrogen and inward helium. D. Outward pressure and inward gravity

Which genotype represents a homozygous dominant allele? HH Hh hh