2. The El Niño/La Niña-Southern Oscillation A. has a regular and predictable cycle.
B. affects weather conditions only in the Pacific region.
C. impacts the jet stream and global weather patterns.
D. involves primarily the Atlantic Ocean.
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many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.

the answer is c. it will give up it's valence electron to the other atom.