Which of the following statements is true?
a. there is less water on earth now than there was millions of years ago.
b. there is less water on earth now than there was millions of years ago.
c. there is no way to tell how much water was on earth millions of years ago.
d. there is the same amount of water on earth now than there was millions of years ago.

Which of the following best describes the relationship between glucose and complex molecules such as hormones?

Ineed to get this test done which of the following statements is correct in hour our immune system responds to a potential pathogen? a.) the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. b.) b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c.) the adapted immune system will call on the innate immune system to destroy the pathogen. d.) the t-cells in the adapted immune systems are the first to recognize the pathogen

Which of these is a provisioning service people get from the ocean