The diagram below shows different positions of Earth and Mars around the sun. Based on the diagram, which of these statements is correct?
The orbital speeds of Earth and Mars are greater in position B than in position A.
The orbital speeds of Earth and Mars are greater in position A than in position B.
The orbital period of Earth in position A is greater than the orbital period of Mars in position B.
The orbital period of Earth in position B is greater than the orbital period of Mars in position B.

In the context of the neural impulse, which of the following is true about the depolarization of neuron membranes?

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.

Do plant cells perform cellular respiration?