Which of the following best describes the matter present in an ecosystem?
A. The total amount of matter in an ecosystem is constantly decreasing due to the process of decomposition
B.
The waste materials generated by one organism are often reused by other organisms
C. When an organism reproduces new matter is added to its ecosystem
D. New matter is continuously generated by an ecosystem in a process known as photosynthesis
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Complete the statements to identify the first two steps of meiosis i. (1 ) the first and longest step of meiosis i is called i. (2)the second step of meiosis i is called i.

What are the seven economic and social goals?

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