1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lana [24]
3 years ago
6

URGENT how is the universe made mostly of hydrogen and helium? ​

Biology
1 answer:
Doss [256]3 years ago
6 0

Answer:

hydrogen and helium, were produced in the hot, dense conditions of the birth of the universe itself.

Explanation:

You might be interested in
How do you convert 0.00000032 into scientific notation?​
Evgen [1.6K]

Answer: 3.2 x 10^ -7

Explanation: move the decimal until there is one number in front of the decimal and then count how many places you moved the decimal and because it becomes a smaller number, the exponent is negative

3 0
3 years ago
If the sympathetic nervous system increases the production of saliva, the parasympathetic system _____.
slavikrds [6]
<span>If the production of saliva is increased by the symphatetic nervous system (SNS) then, the parasymphathetic nervous system (PNS) does almost exactly the opposite of the action of the SNS. Therefore, for this item what is done by the parasymphatetic nervous system is to decrease the production. </span>
3 0
3 years ago
Read 2 more answers
Where is carbon NOT found
alisha [4.7K]
It’s not found in inorganic matter
5 0
3 years ago
Read 2 more answers
Which of the following are radioactive decay processes used to determine the age of samples? Select the TWO answers that are cor
Lena [83]

Answer:

d. carbon-14 to nitrogen-14

e. potassium-40 to argon-40

Explanation:

Radioactive or radiometric dating is a process used by scientists to date materials including rocks and carbon using the decay rate of radioactive isotopes. Certain elements are used in this process, they include: Uranium-238 to lead-206, Pottasium-40 to Argon-40, Carbon-14 to Nitrogen-14 etc.

Uranium-238 to lead-206 is used for uranium-containing minerals with Uranium-238 decaying to lead-206. It has a half-life of 4500 million years.

Pottasium-40 to Argon-40 is used for pottasium-containing materials with pottasium-40 decaying to Argon-40. It has a half-life of 1300 million years

Carbon-14 to Nitrogen-14 is used for carbon-based materials with Carbon-14 decaying to Nitrogen-14. It has a half-life of 5730 million years.

7 0
4 years ago
Dton
Dafna11 [192]

Answer:

polypeptides

Explanation:

Amino acids generally represent the building blocks of proteins. In order words, proteins are polymers of amino acids.

The amino acids in proteins are linked together by peptide bonds. <u>A peptide bond is formed between two amino acids when the amine group of one of the amino acids combines with the carboxylic group of the other with the elimination of water</u>. When the reaction involves multiple amino acids, multiple peptide or polypeptide, also known as protein is formed.

4 0
3 years ago
Other questions:
  • The tendency of objects moving large distances on Earth's surface to bend to the right in the Northern Hemisphere and to the lef
    10·1 answer
  • In 2002, the fossil of a four-winged dinosaur was discovered in China and named a microraptor. What was the significance of the
    6·2 answers
  • A yellow discoloration of the skin caused by greater-than-normal amounts of bilirubin in the blood is called
    5·2 answers
  • Why is the photosynthesis equation often written with several arrows ?
    14·1 answer
  • How are simple sugars used for energy compared to more complex sugars
    11·1 answer
  • When you were testing the ciliospinal reflex and only stimulated the left side of the subject, was the response reflex contralat
    9·1 answer
  • Explain the method scientists use to study how Earth’s atmosphere and climate have changed during the past million years.
    12·1 answer
  • Why is water important, describe the special properties of water? Provide examples.
    5·1 answer
  • The two birds shown in Figure A and B are found on one island. The bird species in figure A is moved to a new island, where food
    14·1 answer
  • Which of the following choices is a goal of science?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!