A comparison of the age of the Earth obtained from radioactive dating and the age of the Universe

Biology

1 answer:

Alexxx [7]2 years ago

7 0

The Earth was formed after the Universe began. (A)

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Pls help me with 5.4 and 5.5 thanks

Ede4ka [16]

Answer:

5.5|1/4

Explanation:

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2 years ago

A seasonal color change helps animals in the taiga to _______.

lianna [129]

The answer is a. evade predators.

Animals that live in taiga had to adapt to seasonal changes, by changing their fur or feather color. For example, snow-show hare and ermine live in taiga and their fur color changes with environmental conditions. To effectively camouflage, their fur is white during the winter. That helps them blend into the snow. In the summer, where there is no snow, their fur is brown and similar to the soil color. This way<span> it is more difficult for their predators to spot them.</span>

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2 years ago

A - DNA as the inheritance materials B - RNA as the inheritance materials C - The formation of organic molecules, e.g. nucleic a

Stels [109]

EXPLANATION:

There are 2 types of nucleic acids: DNA(deoxyribonucleic acid) and RNA(ribonucleic acid).

Living organisms have their genetic material in their DNA. Viruses use RNA as their genetic material but are usually called non-living things( because they can't reproduce without help from a host).

The function of nucleic acids has a progression from DNA to RNA to proteins. This is called the central dogma of molecular biology.

Nucleic acids are formed by a linkage of polynucleotide chains with phosphodiester bonds. These polynucleotide chains are formed from monomers called NUCLEOTIDES.

A nucleotide is made up of 3 parts:

i) a nitrogenous base

ii) a five-carbon sugar

iii) at least one phosphate group.

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3 years ago

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Why the walls of the ventricles are much thicker than the walls of the atria.

Mkey [24]

Answer:

The ventricles of the heart have thicker muscular walls than the atria. This is because blood is pumped out of the heart at greater pressure from these chambers compared to the atria.

Explanation:

hope this helps

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2 years ago

How do ships float in water

Liula [17]

The air that is inside a ship is much less dense than water. That's what keeps it floating! ... As a ship is set in water, it pushes down and displaces an amount of water equal to its weight

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2 years ago