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Luda [366]
3 years ago
12

Darwin proposed the “theory of evolution by natural selection” in which he stated that certain members of species have adaptatio

ns to help them _____ while other members who don’t have the helpful adaptation die out.
PLS HELP ME! WHAT DOES IN THE MISSING BOX??!
ILL GIVE U 5 STARS JUST HELPPP
Chemistry
1 answer:
AnnyKZ [126]3 years ago
8 0

Answer:

survive

.............

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Greenhouse gases in the atmosphere contribute to
lesantik [10]

Answer:

A.

Explanation:

While solar power does produce carbon dioxide emissions in the manufacturing processes required to produce panels and batteries, it does not produce CO2 while converting solar energy to electrical energy.

6 0
2 years ago
How many atoms are in 22 grams of copper metal?
strojnjashka [21]
Atomic mass Cu = 63.546 a.m.u

63.546 g ---------------- 6.02x10²³ atoms
22 g --------------------- ??

22 x (6.02x10²³ ) / 63.546 => 2.08x10²³ atoms

hope this helps!
6 0
3 years ago
46. True or false. Chemical reactions do not involve changes in the chemical bonds that join
Naddika [18.5K]

Answer:

Chemical reactions do not involve changes in the chemical bonds that join

atoms in compounds :

<u>False</u>

Explanation:

Chemical reaction are the reaction in which old bonds break and new  bonds are formed . The formation of new bond result in formation of new compounds . This happen because new bond are result of linking different atoms by the bond.

For example : Water formation from Oxygen and Hydrogen is a chemical process :

2H_{2}+O_{2}\rightarrow 2H_{2}O

Original(old) bonds are :

H-H bond in H2 and O-O bonds in O2

In H2 = Hydrogen is joined to Hydrogen

IN O2 = Oxygen is joined to oxygen

New Bonds =

O-H bonds in water (H2O)

Oxygen is joined to hydrogen = New Bond formation

Hence,

<u>Chemical reactions do involve changes in the chemical bonds that join </u>

<u>atoms in compounds</u>

<u />

3 0
3 years ago
What causes the temperature to decrease with altitude through the mesosphere?
ololo11 [35]
The temperature decreases because there is no ozone in the mesosphere and the amount of air is decreasing.

3 0
2 years ago
Please help i will give brainliest
ExtremeBDS [4]
Question 2 answer is A
7 0
3 years ago
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