Which of these statements best explains why the atmosphere of today was partly due to the interactions of spheres in the past? (3 points) Group of answer choices

The increase in fertility of soil around the volcano helped produce rain.

The molten Earth released hydrogen and helium into the atmosphere.

Bacteria used nutrients in the soil for volcanic eruptions.

Chemicals released from water formed the atmosphere.

Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.

True or false multiple lane changes must be done individually going through the same procedures for each lane change

Which of th following is needed for cellular respiration to occur