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PIT_PIT [208]
3 years ago
7

Earth's climate has been stable throughout its history. True False

Chemistry
1 answer:
Leto [7]3 years ago
5 0
The answer would be false......
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Heredity is defined as
AnnyKZ [126]

Answer:

B.

the passage of genetic instructions from one generation to the next generation.

These are called genes. One mate reporduces with another made and the genetic buildup merges 50 % and 50% with genetics(if it's meiosis), or DNA codes from the parents to the offspring that then possess some of the genes. That shows heridity.

8 0
3 years ago
True or False <br> a gas that ignites a glowing splint is oxygen
miss Akunina [59]
True, oxygen gas ignites a glowing splint
8 0
2 years ago
The element in Group 14 Period 4 has how many neutrons and is it a metal, nonmetal, metalloid or noble gas.
monitta

Number of neutrons=41, and it is metalloid

<h3>Further explanation</h3>

Group 14⇒valence electron = 4(ns²np²)

Period 4⇒n=4

So electron configuration of the element :

1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d¹⁰, 4p² = 32 electron=atomic number

The element with atomic number 32, which is in period 4 and group 14 is Ge-Germanium

There are seven elements that can be classified as metalloids, namely boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te), and polonium (Po).

While the mass number: 73

So the number of neutrons = mass number-atomic number

\tt 73-32=41

8 0
2 years ago
An ionic compound is composed of elements X and Y. X forms
mote1985 [20]

Answer: X2Y3

Explanation: I had the same question ;) (and got it right)

7 0
2 years ago
Which of the following is not among the advantages of generating nuclear energy?
WARRIOR [948]

B

While nuclear energy does not pollute the environment, it poses the risk of radiation which is harmful to organisms because it causes lethal mutations.

Explanation:

Nuclear fission, for example, releases neutrons and other particles (at very high speeds) that can ionize materials including DNA. This will induce mutations of DNA most of which are usually lethal to organisms. Gamma and X- rays are also produced by fusion reactions and  if exposed to organisms also cause mutations on DNA through double stranded breaks. Therefore, the risk of an accident of a nuclear reactor can have immense ramifications on the ecosystems.

Learn More:

For merits and demerits of nuclear energy check out;

brainly.com/question/1161965

brainly.com/question/3760263

brainly.com/question/8608522

#LearnWithBrainly

7 0
3 years ago
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