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Verizon [17]
3 years ago
8

The only group with an endoskeleton is

Biology
1 answer:
DiKsa [7]3 years ago
5 0
The only group with an endoskeleton is A or D because you put the same answer choice twice
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If a nonnative species is introduced into an ecosystem . how might the biodiversity or health of the ecosystem change? why
Vinil7 [7]
It would be negatively impacted because a foreign species would start to take over a native species’ role in the ecosystem and may also directly (if it’s a predator) or indirectly lead to the decline of other species. So as some species may start to decline and eventually become extinct in that particular ecosystem, the biodiversity level would lessen cuz there’s less types of plants and animals. Less plants and animals could lead to the ecosystem to eventually collapse and it would be literally a mass extinction.
8 0
3 years ago
How do temperature humidity and pressure vary within an air mass​
Assoli18 [71]

A. Temperature, humidity, and pressure are basically the same all through an air mass.

B. Temperature at the border of an air mass is always higher than in the middle.

3 0
3 years ago
Read 2 more answers
How many different types of RNA are there?<br><br> A, millions<br><br> B. three<br><br> C. one
Natali [406]

Answer:

B. Three

Explanation:

Messenger RNA : mRNA  : Encodes amino acid sequence of a polypeptide.

Transfer RNA: tRNA  : Brings amino acids to ribosomes during translation.

Ribosomal RNA: rRNA :  With ribosomal proteins, makes up the ribosomes, the organelles that translate the mRNA.

8 0
3 years ago
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If the percent of guanine in a DNA strand is 14%. What is the percent of thymine in<br> that DNA?
I am Lyosha [343]

Answer:

20% plus 20% is 40% of adennine and thymine. From 100% DNA bases subtract 40% and you will get 60%. Then divide this by 2 and you will get 30%. 30% of guanine and 30% of cytosine, because their amounts are equal in the DNA stand.

7 0
3 years ago
In mosses gametes are produced by _____; in ferns gametes are produced by _____.
Zepler [3.9K]

Answer: Mosses gametes are produced by mitosis and ferns gamete are also produced by mitosis.

Explanation:

Mosses and ferns are bryophtes, a group of plants that live in moist habitats and lack true leaves and root.

Mitosis is a form of cell division where a single cell divides to produce two identical daughter cells.

During the life cycle of ferns, the diploid sporophyte produce haploid spores by meiosis. The prothallus of the sporophte produce gametes by mitosis.

In mosses, the diploid sporophyte produce spores from a capsule which open when a small structure operculum degenerates. A single spore germinate to form protenama from which the gametes are produced through mitosis.

6 0
3 years ago
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