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2 years ago

14 Answer:

Biology

1 answer:

Levart [38]2 years ago

8 0

Oxygen is the most abundant element in the Earth's atmosphere.

The valence electrons are those found in the outermost energy level of an atom.

In the modern periodic table, elements are arranged in order of increasing atomic numbers. True

Elements can be classified as metals, nonmetals or metalloids. True

Nonmetals are good conductors of heat and electricity. False

Luster is a chemical property of metals. True

Halogens include fluorine, chlorine, bromine, iodine, and astatine. True

<h3>What is an element?</h3>

An element is a substance which cannot be split into simpler units by a ordinary chemical process

So therefore, Oxygen is the most abundant element in the Earth's atmosphere.

The valence electrons are those found in the outermost energy level of an atom.
In the modern periodic table, elements are arranged in order of their increasing atomic numbers True

Learn more about elements:

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Which of the following shows an unsaturated fatty Acid? Out of those two

SVETLANKA909090 [29]

Answer:

None of these two

Explanation:

An unsaturated fatty acid must contain a double bond in the poly carbon chain other than the double bond in the functional group. In these two, images there exists a double bond in the carboxylic group i.e –COOH.

Since none of them have double bond in long poly carbon chain, therefore these two fatty acids cannot be considered as unsaturated fatty acid.

3 0

3 years ago

What is the symbol for lipids, DNA and proteins

son4ous [18]

Symbols for lipids is C and H.
It also contains Nitrogen and phosphorous. DNA or RNA their symbol is C, H, O, N, P. Protein contains both sulfur and selenium which are C, H, O, N, P. Proteins are subunits of amino-acids.
Proteins can be carriers, signaling structural and also immune responses. They are made of the nucleus.
Lipids are hydrophobic and are naturally found in the body to mean that they don't mix with water reason being they are non-polar. Lipids make up phospholipids bilayer.
DNA is supercoiled, and their backbone which is made up of phosphate and sugars groups.

8 0

3 years ago

What are two types of speleothems

BlackZzzverrR [31]

Answer:

I think is the two type of speleothems is Stalactites and Stalagmites

Explanation:

Hope this help

Have a wonderful day!!!

7 0

3 years ago

Species will not evolve into new species over many generations. A new species happens quickly.

amid [387]

False ? I think not sure

5 0

3 years ago

Read 2 more answers

The burning and cutting of the trees will affect the carbon cycle by adding___________ to the atmosphere in the case of burning

poizon [28]

Answer:

The burning and cutting of the trees will affect the carbon cycle by adding carbon dioxide to the atmosphere, in the case of burning the trees and by not removing enough carbon dioxide from the atmosphere in the case of cuting the trees.

Explanation:

When burning and cutting down trees, these actions significantly alter the carbon cycle, adding carbon dioxide in the case of burning trees and preventing said carbon dioxide from being eliminated when cutting down the trees that, through the process of photosynthesis, are responsible for cleaning the atmosphere transforming carbon dioxide into oxygen.

Where these processes lead to carbon cycle stagnation in the short and long term.

7 0

3 years ago