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Biology, 21.06.2019 20:00
How does pregnancy begin? a) a placenta forms in the uterus b) a sperm reaches an egg in the fallopian tubec) the blastocyst differentiates into two cell types d) contractions begin in the uterine wallapex
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Biology, 21.06.2019 20:30
Describe at least 2 abiotic and two biotic factors found in the desert biome how do these abiotic factors interact with the biotic factors
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Biology, 21.06.2019 23:00
Classify the structures as homologous or analogous, depending on their structure and function.
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Biology, 22.06.2019 00:20
1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.
Answers: 1
A certain area received a large amount of rain and some of it remained on top of the soil. What happ...
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