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4 years ago

10

Energy needs vary greatly ;between an urban city and a rural community due to population as well as availability. The most commo

n renewable energy resource for an urban area is
a) power lines
b) solar panels
c) nuclear power
d) wind turbines

1 answer:

dolphi86 [110]4 years ago

7 0

Answer: B) solar panels

Explanation:

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Which sources do scientists use to study ancient climates? Check all that apply.

stira [4]

Answer:

Its tree rings, pollen grains and fossils or 2,4, and 5

Explanation:

I got it right

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3 years ago

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Jonah observes the Sun through a special filtered telescope during a total solar eclipse. He sees a red ring and a faint white r

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He is looking at the chromosphere and corona.

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Emperor penguins use a huddling behavior to conduct heat efficiently. Similarly, honeybees conduct heat within their hives by hu

olya-2409 [2.1K]

<h2>Emperor penguins</h2>

Explanation:

Evaporative and convective is Right answer.

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3 years ago

Proteoglycans are part of the extracellular matrix; they provide structure, viscosity and lubrication, and adhesiveness. They ar

ankoles [38]

Answer:

This question lacks options, options are: a. beta-D-fructofuranose b. amylose c. uronic acid d. N- acetylglucosamine. The correct answers are c and d.

Explanation:

Glycosaminoglycans are very long, unbranched polysaccharides, made up of repeating units of disaccharides. One of the disaccharides is always an amino sugar, which can be N- acetylglucosamine. The other is uronic acid (it can be iduronic acid or glucuronic acid and is often sulfated at position 2). The amino sugar is usually sulfated and the rest of the sugars have carboxyl groups, which give the structure a negative charge, which attracts a large amount of cations such as sodium. Glycosaminoglycans are often covalently bound to proteins to form proteoglycans. Hyaluronic acid is the only glycosaminoglycan that does not form protein bonds and does not have sulfate groups in its structure.

4 0

3 years ago

Imagine that you are performing a cross involving seed texture in garden pea plants. You cross true-breeding round and wrinkled

Tatiana [17]

Answer:

<h2>D) 610:190, round seeds:wrinkled seeds</h2>

Explanation:

Let round seed as R and wrinkled seed as r.

So the round is dominant (R) over wrinkled(r).

Hence , round is dominant and wrinkled is recessive rr.

Now cross between pure round (RR) and pure wrinkled (rr).

RR× rr

F1 offspring are: Rr ( all)

Now cross between F1 offspring;

Rr × Rr

F2 are= RR, Rr, Rr and rr

RR and Rr = round

rr= wrinkled.

round to wrinkle ratio is= 3:1

So, 610:190; round seeds:wrinkled seeds is the expected result in the F2 progeny.

3 0

3 years ago