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Elodia [21]
3 years ago
15

Why are there no gram-positive archaea species but there are gram-positive bacteria species

Biology
1 answer:
san4es73 [151]3 years ago
3 0

Answer:

There are no gram-positive archaea because archaea lack peptidoglycan in their cell walls, meaning that the archaic cell walls are more similar to gram-negative bacterial walls, although they do show a greater variety of cell wall types. And bacteria do have this.

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The failure of the attempt to reintroduce clapper rails in California was an example of the _____.
Lemur [1.5K]

The correct answer is option D, difficulty of redesigning workable ecosystems

Reason -

The area that was redesigned into an ecosystem actually failed to attract the endangered species of clapper rails in California because of the following two reasons –

a) Failed attempt of restoration of Cord grass ( a tree which is a dominant tree in the nesting habitat of clapper rail) . Even if few such trees were there they could not grow to their full height and thus were incapable of providing adequate nesting cover

b) Due to the lack of predatory insect, some herbivore insect in the ecosystem attacked the green grasses thereby making the nesting inadequate.

7 0
3 years ago
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Andru [333]

Answer:

C. Both (a) and (b)

Explanation:

Hunting, destroying habitats, polluting and introducing non-native species can cause extinction.

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Lostsunrise [7]
I'm pretty sure the answer is B
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Novay_Z [31]
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</span>The climate on the Moon is harsh because  the Moon has very little atmosphere. The moon can never<span> be too close or too far because it is right next to earth. </span>
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Which of the following is true of retroviruses? (3 points)
Nikitich [7]

Answer:

Explanation:

A retrovirus is an RNA virus that is duplicated in a host cell using the reverse transcriptase enzyme to produce DNA from its RNA genome. The DNA is then incorporated into the host’s genome by an integrase enzyme. The virus thereafter replicates as part of the host cell’s DNA. Retroviruses are enveloped viruses that belong to the viral family Retroviridae. A special variant of retroviruses are endogenous retroviruses, which are integrated into the genome of the host and inherited across generations. Endogenous retroviruses are a type of transposon.

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