You could talk about pollution, trash on beaches...etc
Answer:
A. single-gene
Explanation:
It is controlled by a single gene that has two alleles. The allele for a widow's peak is dominant over the allele for a hairline with no peak.
When climbing a mountain, we can observe transitions in biological communities that are analogous to the changes in biomes at different latitudes.
Answer:
Explanation:crystal size in igneous rocks is determined by how quickly magma or lava cooled to form it.
sun, salmon, maple trees, bears, plankton, whales, grass, cows, humans, shrimp, caterpillars, finches (small birds), hawks
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Yes, they are all living things that exist in our world.