Darwin went to the continents of Africa and South America, wherein both of them have a tropical grassland/Savanna biome. The grasslands in these continents gave him a chance to notice that species do vary globally. He observed the similarities between the different large, flightless birds species–rheas, ostriches, and emu.
Answer:
b
Explanation:
this is correct bc it shows that although a mutation occurred, it happened over time, and so now, the lizards attained a new adaption which allows them to avoid the floods
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Because grasslands do not have many trees, only lots of grass and flat earth. Even if there were flying birds and tree animals, there'd be very few of these, with the fact that there are almost no trees at all in grasslands.
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Answer:
Some body systems work together to complete a job. For example, the respiratory and circulatory systems work together to provide the body with oxygen and to rid the body of carbon dioxide. The lungs provide a place where oxygen can reach the blood and carbon dioxide can be removed from it. Some body systems share a common organ that performs more than one job.