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Alenkinab [10]
3 years ago
14

Question 1: When a chemical reaction occurs, what happens to the atoms of the two substances?

Biology
1 answer:
MatroZZZ [7]3 years ago
6 0

Answer:

In a chemical reaction, only the atoms present in the reactants can end up in the products.

Explanation: No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

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Suppose the sea level suddenly rose by 100 meters. What would happen to the world’s coral reefs? Explain your view.
-BARSIC- [3]
They will not get light and will
die
7 0
3 years ago
The net primary production of a pine forest on a lava flow on Mount Fuji is about 165,000 kcal/m2/yr, and the plant respiration
IceJOKER [234]

Answer:

<em>The total amount of energy transferred during photosynthesis for this ecosystem equals</em><em> 260,000 kcal/m2/yr.</em>

Explanation:

To answer this question, we need to know that  

  • gross primary productivity (GPP) = energy captured and converted into chemical energy during photosynthesis
  • net primary productivity (NPP) = difference between GPP and respiration rate

So, to calculate GPP we need to sum NPP to Respiration rate. This if,

NPP = 165,000 kcal/m2/yr

R = 95,000 kcal/m2/yr

NPP = GPP – Respiration

Then,

GPP = NPP + R

GPP = 165,000 kcal/m2/yr + 95,000 kcal/m2/yr

GPP = 260,000 kcal/m2/yr

7 0
3 years ago
What situation is an example of artifical selection
ss7ja [257]

<u>Answer:</u>

An example situation of artificial selection is "More African elephants today naturally lack tusks compared to the elephant populations 100 years ago, because big game hunters sought elephants for ivory".

<u>Explanation:</u>

  • The process of breeding animals to acquire the desired characteristics by the external means other than natural selection and behavior of animal itself is called as artificial selection.
  • The first artificial selection was carried out by Darwin when he mated penguins that would have a higher chance of breeding.
  • The practice of artificial selection was existing in human civilization a long time ago.
  • This process was used to use wild animals and domestic animals in battles and other household works.
3 0
3 years ago
Which of the following statements about the smooth endoplasmic reticulum is/are correct?
Vlada [557]

Answer:

  • Liver cells are abundant in SER.  
  • The testes and ovaries are tissue types whose cells are abundant in SER.
  • Cholesterol is made in the SER.
  •  Phospholipids are synthesized from cytosolic water soluble precursor molecules.  

Explanation:

This is because liver cells contain enzymes that metabolize various lipid-soluble compounds.

This is because testes and ovaries produce steroid hormones (cholesterol is the precursor for their synthesis).

ER is the organelle at which all membrane lipids are synthesized.

Phospholipids are the main lipids that are the main structural components of the cell membrane. They are synthesized on the cytosolic side of the ER membrane, from water-soluble cytosolic precursors.

8 0
3 years ago
What is the volume of a black hole?
Alex_Xolod [135]

Answer:

This value is 4*(pi)* (2Gm/c^2)^2 for nonspinning black holes, with G= Newton's constant, c= speed of light, and m= mass of the black hole. The 3-dimensional spatial volume inside a black hole, in contrast, depends explicitly on the definition of time, and can even be time dependent, or zero.

Explanation:

hope this helps

3 0
2 years ago
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