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Romashka [77]
4 years ago
9

(I KNOW THE ANSWER) What caused natural selection among the peppered moths of Manchester, England? A) natural environmental chan

ges B) human-caused environmental changes C) genetic stability in the population D) resource stability in the population  
Answer: B) human-caused environmental changes
Hope this helps :)
Biology
2 answers:
nikdorinn [45]4 years ago
8 0

Answer:

(B) Human-caused environmental changes

Explanation:

Natural selection may be defined as the process that helps the organisms to survive better in their environment.

Industrial revolution leads to the natural selection of peppered moth. Hence, the human caused environmental changes is responsible for  natural selection in case of peppered moth of Manchester.

Thus, the correct answer is option (B).

elixir [45]4 years ago
6 0

It did help a lot on my test!! Thank you!!

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Answer:

One difference between these cells is plant cell has chloroplast but animal cell does not have chloroplast.

Another difference between these is that plant cell has cell wall but animal cell does not have cell wall.

Explanation:

Plant cell are known to cells that possess chloroplast. These chloroplast contain chlorophyll which enables the plants to manufacture their own food. Animal cell does not possess chloroplast which makes it impossible for animals to manufacture their own food.

Plant cell actually have cell wall and a cell membrane but animal cell does not have cell wall but only possesses cell membrane. The cell wall gives mechanical strength and maintains cell shape.

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Which of these is an effect of overcrowding in an environment? A. species create new habitats to survive B. predator-prey relati
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I think it is D but I might be wrong !!! Hope I help !!
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(I need this answered ASAP) Approximately how much energy is LOST with each energy transfer from level to level in the ecologica
Nataliya [291]

Answer:

A. 90%

Explanation:

Only 10% can transfer from level to level.

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3 years ago
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Romashka-Z-Leto [24]
C: conducting an experiment
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3 years ago
At the moment of sperm penetration, human eggs ______. A. have used flagellar propulsion to move from the ovary to the oviduct B
marshall27 [118]

During sperm penetration, human eggs are still surrounded by follicular cells.

Therefore, the correct answer is Option D.

<h3>What changes does egg undergo for fertilization?</h3>
  • An egg goes through a few changes at the hour of sperm penetration during fertilization.
  • These progressions happen at the cell surface, in development, physiology and gene expression.
  • For fertilization, a sperm should combine with the cell membrane and afterward infiltrate the egg cells.
  • Infiltration through the egg cell or extracellular matrix (ECM) is a troublesome task.
  • The acrosome of the egg goes through acrosomal reaction to get through the hard shell of cell.
  • To go through the follicle cells encompassing the egg or oocyte, the sperm discharges hyaluronidase enzyme.
  • This chemical isn't delivered until the sperm comes into contact with the egg cell's zona pellucida.

Learn more about fertilization here:

brainly.com/question/18117670

#SPJ4

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2 years ago
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