Mesozoic Era is the second of the Earth's major era geologically of the Phanerozoic time. It means middle life in Greek. The climate during this time was warm and had less difference in the temperature today thus the answer is a. About as warm as present.
Answer:
the organisms internal structures could not be viewed as a scanning electron microscope only provides images of the surface!
Explanation:
The answer for the question above is a sign stimulus.
Tibbergen used crude models of sticklebacks to investigate which features of male and female sticklebacks elicited attack and courtship behavior from male sticklebacks. The findings were that the male sticklebacks responded in a relatively invariant way and attacked a model with red belly.
Answer:
sis / bro
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