Bird, bat, and butterfly wings are examples of convergent evolution. <span>This means that all of these wings share the same function and are similar in structure, but each evolved independently. Bird, bat and butterfly wings are analogous, which means that they have separate evolutionary origins, but are similar because of the natural selection that shaped them to play a key role in flight.</span>
B. Tundra - only biome with snow
D. The effects of pollution can be studied without harming an ecosystem.
Explanation:
The most ethical reason for carrying out a simulation study instead of a direct investigation is the effects of pollution can be studied without harming an ecosystem.
Although he has noble cause for studying the effect of oil leak into the Gul of Mexico, introducing a whooping 10 million liters will even cause more damage to the ecosystem from the ensuing study.
Using a simulation will circumvent this risk and environmental pollution that will ensue.
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Ground Substance is the correct answer
