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Irina-Kira [14]
3 years ago
15

Which statement describes the motion of the sun?

Biology
2 answers:
kaheart [24]3 years ago
8 0
Like all planets and most stars, the motion of the sun is directly related to the rotation of it's axis.
dimaraw [331]3 years ago
6 0

Answer:

The sun rotates on an axis.

Hope this helps

xox

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_________is severe pain and constriction about the heart, usually radiating to the left shoulder and down the left arm and creat
White raven [17]

Answer:

Heart attack

Explanation:

Heart attack is the death of a part of heart muscles and severe pain that causes heart constriction having pain in the chest which spread to the left shoulder and down the arm thereby causing the feeling of pressure in the chest.

This is caused when a blood clots blocks blood flow to the heart thereby leading makes the tissue to loss oxygen and die.

The symptom of heart attack are;

pain in the chest, neck, back or arms, fatigue, lightheadedness, abnormal heartbeat and anxiety, nausea.

Treatment ranges from surgery, medication , rehabilitation e.t.c.

7 0
3 years ago
How many moles of F are there in 1 mole of CaF2? Explain clearly
Strike441 [17]

Answer:

2 moles of F

Explanation:

for every molecule of CaF2, without the two atoms of F, CaF2 cannot be formed.

Now we multiply both CaF2 and F by 6.02 X 10^23 to convert CaF2 and F to moles, it will be the same ratio since we multiplied both by the same number

5 0
3 years ago
The crispr system involves the cas9 enzyme, which identifies specific nucleotides to be cut using a(n) ________ molecule as a gu
bonufazy [111]

Answer:

RNA

Explanation:

CRISPR system was discovered by a Japanese scientist. Naturally <u>bacteria and many other prokaryotes</u> have <u>CRISPR system in their genome</u> which they use as a<u> self defense against a pathogen</u> which is invading them. It consists of<u> inter spaced, short palindromic nucleotide repeats </u>which <u>encode a guide RNA (gRNA)</u>. This guide RNA (gRNA) recognizes the<u> target sequence</u> on the pathogen. The <u>gRNA is followed by Cas9 enzyme</u> which along with the gRNA plays a very important <u>role in breaking genome</u> of the pathogen. Once the target gene is cut down the rest of the DNA can be rejoined by<u> non homologous end joining. </u>

But nowadays, scientists are using this system for <u>genome editing</u> and <u>incorporating desired gene</u> between the two ends which are cut down by <u>CRISPR Cas9 system.</u>

7 0
3 years ago
Read 2 more answers
Cell walls are made out of cellulose. What type of organic compound is this?
AleksandrR [38]
Organic compound is generally any chemical compound that contains carbon. Due to carbon's ability to catenate (form chains with other carbon atoms), millions of organic compounds are known. Study of the properties and synthesis of organic compounds is the discipline known as organic chemistry. For historical reasons, a few classes of carbon-containing compounds (e.g., carbonates and cyanides), along with a handful of other exceptions (e.g., carbon dioxide), are not classified as organic compounds and are considered inorganic. No consensus exists among chemists on precisely which carbon-containing compounds are excluded, making the definition of an organic compound elusive.[1]Although organic compounds only make up a small percentage of the Earth's crust, they are of central importance because all known life is based on organic compounds. Most synthetically produced organic compounds are ultimately derived from petrochemicalsconsisting mainly of hydrocarbons.
4 0
3 years ago
Read 2 more answers
Please answer!! ill Mark brainliest!!​
Sliva [168]

<u>Answer</u>: (1 is the oldest event)

1. Europe sent explorer and merchants along the Silk Road and across the Indian Ocean

2. European nations colonized countries in Southeast Asia

3. World War II broke out in Europe as well as in East Asia and Southeast Asia

4. Nations in Southeast Asia demanded and won independence

Multiple nations in Southeast Asia obtained their independence after World War II some as late as 1975 (Portuguese Timor - now East Timor).

3 0
3 years ago
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