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3 years ago

6

Why do we celebrate Earth Day?

2 answers:

Maslowich3 years ago

5 0

To have a holiday for the earth and that everyone should take care of it as it is a yearly reminder to take care of earth

frez [133]3 years ago

4 0

Answer:B

Explanation:Earth Day serves as a reminder to everyone that we need to respect our planet. Countries organize events as a way to educate their people about the environment and ways they can help protect it.

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What was the name of the original supercontinent that Wegener proposed in his theory?

LenKa [72]

D pangaea hope this helps

7 0

2 years ago

Read 2 more answers

What four body plan innovations were found in an ancient flatworm

Oksanka [162]

Answer:

Four innovations are central nervous system, eyes, bilateral and hermaphrodites.

Explanation:

Innovations found in an ancient flatworm were the presence of central nervous system means head and a brain. The head had eyes which is the first in the animal world. Their body is bilateral means equally divided into two parts. They are also hermaphrodites means having male and female on a single organism which was not present at that time of animals.

5 0

2 years ago

What happens when a photon of light hits photosystem Il

yawa3891 [41]

Answer:

Which statement best describes how Poe creates mood in the excerpt?

Poe uses rhyme to create an optimistic mood.

Poe uses rhyme to create a nostalgic mood.

Poe uses rhyme and onomatopoeia to create a rowdy mood.

Poe uses rhyme and onomatopoeia to create a boastful mood.

Explanation:

Which statement best describes how Poe creates mood in the excerpt?

Poe uses rhyme to create an optimistic mood.

Poe uses rhyme to create a nostalgic mood.

Poe uses rhyme and onomatopoeia to create a rowdy mood.

Poe uses rhyme and onomatopoeia to create a boastful mood.Which statement best describes how Poe creates mood in the excerpt?

Poe uses rhyme to create an optimistic mood.

Poe uses rhyme to create a nostalgic mood.

Poe uses rhyme and onomatopoeia to create a rowdy mood.

Poe uses rhyme and onomatopoeia to create a boastful mood.Which statement best describes how Poe creates mood in the excerpt?

Poe uses rhyme to create an optimistic mood.

Poe uses rhyme to create a nostalgic mood.

Poe uses rhyme and onomatopoeia to create a rowdy mood.

Poe uses rhyme and onomatopoeia to create a boastful mood.Which statement best describes how Poe creates mood in the excerpt?

Poe uses rhyme to create an optimistic mood.

Poe uses rhyme to create a nostalgic mood.

Poe uses rhyme and onomatopoeia to create a rowdy mood.

Poe uses rhyme and onomatopoeia to create a boastful mood.Which statement best describes how Poe creates mood in the excerpt?

Poe uses rhyme to create an optimistic mood.

Poe uses rhyme to create a nostalgic mood.

Poe uses rhyme and onomatopoeia to create a rowdy mood.

Poe uses rhyme and onomatopoeia to create a boastful mood.Which statement best describes how Poe creates mood in the excerpt?

Poe uses rhyme to create an optimistic mood.

Poe uses rhyme to create a nostalgic mood.

Poe uses rhyme and onomatopoeia to create a rowdy mood.

Poe uses rhyme and onomatopoeia to create a boastful mood.

6 0

3 years ago

An apartment complex has a floor plan with the dimensions shown. To effectively air condition a room, 20BTU's (British Thermal U

marysya [2.9K]

The dimensions of the room is not given. Lets assume a value and calculate BTU accordingly.

Answer and Explanation:

BTU, or British Thermal Unit, is defined as the amount of heat required to raise the temperature of 1 pound of water by 1° F.

In other words,BTU's measures the amount of heat an AC (or any other cooling unit) can remove from a room per hour. Higher the BTU, the more powerful the cooling.

Calculation:

Lets assume that a room is 10 feet wide and 14 feet long.

Step 1

Calculate the size of the room by multiplying the height of the room with its width:

size of the room= 10 × 14

= 140 square feet

Step 2

Then multiply the size of the room that you obtained in step 1 with 20 BTU per square foot, in order to get the minimum BTU's required for AC to cool a room,

140 × 20= 2800

2800 BTU cooling capacity is required.

6 0

2 years ago

Read 2 more answers

All of the following are differences in transcription, RNA processing, and translation between prokaryotes and eukaryotes except

Mazyrski [523]

Answer:

the mRNA goes through extensive modifications such as addition of a poly tail and a 5' cap in eukaryotes but not in prokaryotes.

Differences:

- the promoters in prokaryotes have a -35 and -10 box while in eukaryotes they are variable but have a TATA box from

- the transcription initiation site there is a single RNA polymerase in prokaryotes while eukaryotes have multiple RNA polymerases

- the sigma factor associates with the promoter region in prokaryotes but in eukaryotes there are many basal transcription factors

Explanation:

Ribosomal and transfer RNAs are processed both in prokaryotic and eukaryotic organisms. However, mRNA is only processed in eukaryotes. In eukaryotic cells, mRNA processing involves:

1. Capping at the 5' end. This process has several functions including regulation of nuclear export, prevention of eukaryotic mRNA degradation and promotion of translation.

2. Splicing in order to remove introns and conserve coding exons. Splicing helps to increase the diversity of the eukaryotic mRNAs (and therefore eukaryotic proteins)

3. Polyadenylation by the addition of a poly(A) tail at the 3' end. The poly(A) tail makes the eukaryotic mRNA molecule more stable and also prevents its degradation by exonucleases.

8 0

3 years ago