<span>When you are pregnant, you do not ovulate because you have already fertilized an egg and it is embedded into the uterus where it is growing into a baby. The body knows this, so it does not shed the uterine lining. The shedding of this lining is triggered by hormones which change when the body is pregnant. During pregnancy, a large amount of progesterone is initially produced which helps to prevent the lining from shedding. If you are not pregnant, your progesterone level will begin to decline at the end of your cycle, triggering the shedding of the lining and the period. Birth control pills alter your hormones to mimic a pregnant state. This will prevent the body from releasing an egg and then shedding the uterine lining.</span>
Answer:
Megaspore—2n.
Explanation:
Angiosperms are the fruit bearing plants and reproduce by the process of sexual reproduction. The chromosome number are specific at each stage of the cell cycle of the angiosperms.
Microspores , egg are haploid. Zygote is diploid in nature. Megaspores get germinate into the female gametophytes and these are haploid in nature. Megaspores are also haploid in angiosperms.
Thus, the correct answer is option (b).
Celebrity endorsers can influence the portion of the public (increasingly small) who otherwise do not have strong candidate preferences and pay so much attention to politics. If the celebrity has huge interest and knowledge of politics so i may get influenced.
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When was celebrity endorsement started in United states?</h3>
Celebrity endorsements in the U.S. were started in 1920, precisely a hundred years ago, with film stars publicly supporting candidate Warren G. Harding in the presidential election. From then on, many other celebrities raised their political opinions among their fanbase for electoral candidate.
Celebrities themselves, by making an endorsement may risk losing a share of their audience and inviting public joke and anger.
For more information regarding celebrity endorsement, visit:
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Answer: C- glycolysis, krebs cycle, electron transport chain.
Explanation: Glycolysis is a catabolic reaction that comprises of series of steps that breaks down food to give off energy in a form of ATP. Pyruvate is the product of glycolysis together with two ATP molecules. Pyruvate is further broken down by joining the krebs cycle and finally the electron transport chain that transfer electrons using the redox reaction, to reduce NADH to NAD + H and FADH to FAD, creating the final product i.e ATP, Overall one glucose molecule gives 38 ATP molecules in aerobic respiration.
Answer:
The greenhouse effect is
A) human activity has no effect on elements, chemical compounds, and other forms of matter.
B) living organisms are not limited by any one nutrient.
<u>C) nutrients are circulated throughout the biosphere.
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D) many nutrients do not reach toxic concentrations in the biosphere.
Explanation:
