Answer:
False
Explanation:
Energy can neither be created nor destroyed. Energy can only be transferred from one form to another.
Answer:
answer is C
Explanation:
antonio is considering that since the spiders came first, it cannot have 'derived traits' from anything. spiders themselves are the ancestralspecies of the insects
Answer: is a biological process of food manufacturing by plants.
Explanation: carbon dioxide from people's breathing and energy from the sunlight is absorbed by the plants' pigment known as chlorophyll which convert this gas into oxygen.
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Photosynthesis is the process by which plants, some bacteria and some protistans use the energy from sunlight to produce glucose from carbon dioxide and water. This glucose can be converted into pyruvate which releases adenosine triphosphate (ATP) by cellular respiration. Oxygen is also formed.
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A. one
B. two or more
C. several thousand
Two or more genes are required to determine a polygenic trait. Thus, option B is correct.
Human sex gets decided by the function of SRY gene which possessed by with or without of Y chromosome. The hormone of anti-mullerian and testosterone produced from cells when activating the SRY gene. It generally confirms the development of single-male reproductive systems.
The scenario in humans, the sex ration gets affected by the male parent's hormone level. Also, in XY sex evaluation system, the sperm of male takes part in X or Y chromosome whereas the ovum from female contributes to X chromosome. This greatly results in offspring - either male (XX) or female (XY).
She creates the Punnett square cross below to show sex inheritance. She come to know that both parent determines the sex of a baby and it is when you put xx and xy on a punnet square there are equal amounts male and female.
Therefore, Two or more genes are required to determine a polygenic trait. Thus, option B is correct.
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Answer:
B
Explanation:
Layers of dirt and other rocks are pressed together to form igneous rocks.
B.
Molten material in the earth cools and hardens to form igneous rocks.
C.
Elements in the earth form igneous solids with crystals.
D.
Wind erodes mountains into small igneous rocks.
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Answer: Endangered species are species whose populations are dwindling in numbers and are in danger of becoming extinct. Extinct species are ones who have no documented individuals left and are therefore believed to no longer exist.