Answer
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<em><u>How</u></em><em><u> </u></em><em><u>are</u></em><em><u> </u></em><em><u>u</u></em><em><u> </u></em><em><u>doing</u></em>
D. Variation-adaptation-mutation-natural selection
Answer:
Unlike animal cells, bacteria have a porous cell wall surrounding their plasma membrane. The cell wall may help bacteria survive in <u>hostile</u> environment.
Explanation:
Diferent from cells of higher organisms, the bacterium is faced with an unpredictable and often hostile environment.
Bacteria have evolved in order to survive, a sophisticated and complex cell envelope that protects them, but at the same time allows selective passage of nutrients from the outside and waste products from the inside.
Yes arthropods are triploblastic that is they have 3 embryonic germ layers
Endoderm, Ectoderm and Mesoderm.
During superposition of a wave such as that of the oceans, when the crest and the trough meet, then they cancel out into the period. If two crests meet up, they add up to a crest that’s equivalent to the summation of their amplitudes. This is also true when two troughs meet up.