Too much logging in the oyamel fir forests could lead to the eastern monarch butterfly going extinct because <u>the entire population of the species spends winter in oyamel fir forests.</u>
<u>Why it is the correct option:</u>
a. The oyamel fir forests serve as the winter home for the eastern monarch butterflies. The entire population of monarch butterflies moves to oyamel fir forests in Mexico during winters to protect themselves from the freezing cold temperatures of their natural, breeding habitat. So, too much logging of the oyamel fir trees will destroy the winter habitat of these butterflies, and hence will lead to the decline in their population.
<u>Why the other options are incorrect:</u>
b. the butterflies breed in the oyamel fir trees is an incorrect option because the monarch butterflies breed in their natural habitats in the US.
c. the winters are too cold in oyamel is an incorrect option because these butterflies move to oyamel forests to protect themselves from cold.
d. the butterflies feed on the oyamel fir trees is an incorrect option because the monarch butterflies feed on milkweed.
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Answer:
A. Rectus femoris
Explanation:
Rectus femoris is one of the muscles of the Quadriceps femoris group which in turn makes the anterior and posterior thigh. The rectus femoris, vastus intermedius, vastus medialis, and vastus lateralis together make the quads. Rectus femoris is the thigh muscle that originates from the ilium. It is an example of bipennate muscle and has central tendons. Fascicles are located on either side of the tendons.
Plant cells have a cell wall. They also have a larger water vacuole.
