After a week with lots of rain, runoff has caused a large amount of fertilizer to wash into the ocean from the farms on the California Coast. This caused a bloom in phytoplankton. When these microscopic
creatures die after their short life, their decomposition creates an environment in the water with little
oxygen, making it toxic to mussels and crabs. Identify two organisms which may benefit from this decline
and two organisms (other than mussels and crabs) which may suffer. Explain why this advantage or
disadvantage would occur.

"a.) well–developed vascular system."

the answer is d.) homologous; have mammary glands

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.

the answer is definitely a