What do scientists estimate is the approximate age of the planet earth? A. 660 million years B. 3.5 billion years C. 4.6 billion years D. 12.2 billion years

Answers

Answer 1
Answer: C. 4.6 billion years.
Answer 2
Answer: C. 4.6 Billion years old

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The dermal tissue of the plant

Answers

Answer:

The dermal tissue system protects the soft tissues of plants and controls interactions with the plants' surroundings. The epidermis is a dermal tissue that is usually a single layer of cells covering the younger parts of a plant. It secretes a waxy layer called the cuticle that inhibits water loss.

Explanation:

When energy is released from sugar molecules,many by - products are formed.Which by - Product is expelled from the cell?a.C
b.CO2
c.H2
d.O2

Answers

The right answer is CO2.

The degradation of glucose is either by respiration or by fermentation. In breathing we have a release of CO2.

Respiration refers to both gaseous exchange resulting from inhalation and expiration of the air (CO2 carbon dioxide release and oxygen O2 absorption) and cellular respiration that allows, by degrading glucose through oxygen , to obtain energy.

Im pretty sure it's CO2 but I'm not positive...

What are capillaries so important in the human body

Answers

capillaries being the smallest and thinnest tubes carrying blood in our system are capable of reaching the farthest part of our system and are spread like the roots of grass ,helping in carrying and maintaining the blood circulation of our body in descending order of sizes they can be put in the order 
veins, arteries and ,capillaries
to carry blood in our system

which long term environment change may cause may cause animals adapted to cold weather like polar to survive and flourish

Answers

Answer:

its Ice Age

Explanation:

An ice age is a long period of reduction in the temperature of the Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages and greenhouse periods, during which there are no glaciers on the planet.

Answer:

A

Explanation:

How does semi-conservative replication help prevent mutations during DNA replications?

Answers

DNA replication is the process by which two DNA molecules are produced from one parent DNA molecule. DNA replication is semi conservative, this implies that, each strand in the double helix DNA molecule act as a template for the synthesis of a new, complimentary DNA strand. Because semi conservative method has a DNA template that is already accurately formed, the probability of having errors in the newly formed strand is drastically reduced.

Semi-conservative replication is a process of DNA replication in which each new DNA molecule formed contains one original strand (parental strand) and one newly synthesized complementary strand.

This type of replication occurs during the cell division cycle, ensuring that the genetic information is faithfully copied and passed on to the daughter cells without introducing significant mutations.

By combining accurate base pairing, proofreading, and repair mechanisms, semi-conservative replication ensures that the newly synthesized DNA strands are as identical as possible to the original parental strands. This fidelity in replication is vital for preserving the genetic information and preventing mutations that could lead to genetic disorders, cancer, or other harmful consequences in the offspring cells.

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A farmer is breeding Andalusian chickens. He notices that when he mates a black chicken with a white chicken, the offspring are spotted black and white and look blue in color.What is the name of this inheritance pattern? A) codominance B) segregation Eliminate C) multiple alleles D) incomplete dominance

Answers

A farmer is breeding Andalusian chickens. He notices that when he mates a black chicken with a white chicken, the offspring are spotted black and white and look blue in color. This is because the allele for the black color is as dominant as the allele for the white color. The punnett square in the image shows the cross between the two types of chicken. This is called codominance of the alleles when both the gene types get expressed in the progeny resulting in a mixed phenotype.

A)codominance that's when you see two colors, spotted or striped.