How would removing your umbrella in a rainstorm affect your ability to stay dry? The definition of a keystone species is a species that has a crucial role in an ecosystem. Removing one gear from a clock would stop the clock from working. Removing/changing a major contributer to a balance and natural ecosystem can potentially collapse the entire system altogether.
Answer:
Tropical plant fossils were found in Arctic areas.
Similar rock types are found across continents.
Explanation:
I found several researches on the similarities among the continents. Sorry I dont know the 3rd one
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Answer:</h2>
<u>B. Spores</u> are involved in both sexual and asexual reproduction.
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Explanation:</h2>
In science, a spore is a unit of sexual as well as asexual proliferation that might be adjusted for dispersal and for endurance, frequently for expanded timeframes, in troublesome conditions.
Bacterial spores are not part of a sexual cycle but rather are safe structures utilized for endurance under horrible conditions. Under good conditions, the spore can form into another living being utilizing mitotic division, delivering a multicellular gametophyte, which inevitably proceeds to create gametes.
