A physical change could be the plantet and biosphere have a lot more O2 in the air so more organisms can survive and evolve
Answer:
Estrous cycles give females repeated opportunities to become pregnant throughout their productive lifetime. The cycle is regulated by the hypothalamic-pituitary-gonadal axis, which produces hormones that dictate reproductive events.
Explanation:
Answer:
Answer: The hottest time of the day is around 3 p.m. Heat continues building up after noon, when the sun is highest in the sky, as long as more heat is arriving at the earth than leaving. By 3 p.m. or so, the sun is low enough in the sky for outgoing heat to be greater than incoming.
Explanation:
Rr only because you know that R (Round) is the dominant allele and to get a wrinkled pea you will have to have rr (a monozygotic recessive plant)
Explanation:
The earliest animals would have been invertebrates. Meaning they had no bones to fossilized in the first place and would have been mostly soft tissue supported by internal pressure or surrounding water pressure in the ocean.
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