1. Which of the following best describes a scientific theory? A. It cannot be changed
B. It explains very few observations
C. It may change
D. It basically speculation

C.It may change

Explanation:

Scientific theory is defined as a comprehensive explanation of a phenomenon in the world at large through the use of several experiments and observations to arrive at a conclusion. A scientific theory however could change as in the case of a hypothesis when new accurate data emerge as time goes on which may flaw the previous theory.

It could be refuted or modified as the case may be. It isn’t based on speculation explains and has lots of observations and can be changed.

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.