Biology, 17.09.2019 08:30 GreenHerbz206
Ddt was widely used as a pesticide for 20 years. its use was banned after studies showed severe side effects were evident in humans, the environment, and animals as a result of ddt. which reason best explains why the side effects of ddt were so harmful? ddt kills insects and other pests. ddt decomposes. ddt was genetically engineered. ddt bioaccumulates.
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The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that a) the four organisms do not have a common ancestor. b) humans are more closely related to chimps than any other apes. c) chimps are more closely related to gorillas than they are to humans. eliminate d) there is no evidence if any relationship between the four branches on the tree.
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Biology, 22.06.2019 06:30
Step 1 review the imaginary strand of dna below. note the complementary base pairs. a g c a a t c c g t c t t g g t c g t t a g g c a g a a c c step 2 to begin replicating this strand of dna, draw the two sides of the strand separating. step 3 now, draw the free-floating bases linking up with the separate sides. remember to follow the rules of complementary base pairing. step 4 draw the two resulting dna strands.
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