The correct answer to this question is option"blue-green".
Reason:
The carotenoid is a yellow-orange pigment that absorbs blue light which gives plants there green color.
Therefore the answer should be option B.
Hope this helps!!!
Answer:
Algal blooms occur when algae multiply very quickly. Blooms can form in waters that are rich in the nutrients the algae need to grow, such as nitrogen, phosphorous, and iron. ... Blooms may become more frequent as the earth warms and the levels of nutrients in our waters increase.
Observation is a factual statement that cannot be changed or replaced.
Explanation)
Hypothesis is a tentative statement that can be tested.
Scientific law and theory are considered a fact but can be disproven if new evidence emerges.
Answer:
at right angles or perpendicular to the direction they are moving
