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Nataly [62]
3 years ago
13

Biology: please answer any if you can- thanks!

Biology
1 answer:
ladessa [460]3 years ago
4 0
1.) Mitosis is the splitting of a parent cell into two daughter cells. When mitosis occurs the DNA is copied, making double the amount of chromosomes in the parents cell which will late be divided into two separate cells when the cell pinches in the middle. 
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What did walleye evolve from?
alex41 [277]
Walleye like the fish? Orrr is it another term
8 0
3 years ago
What is a distinction that can be drawn between macroevolution and microevolution?
nikitadnepr [17]
<span>Microevolution refers to changes in the genetic pool of a species population. The changes in the genes (probably gene and allele frequencies) are observed over short time periods hence are small changes. This is in comparison to macroevolution that observes huge changes over longer time periods  in the population that warrant that the new populations is considered to be a new species</span>
8 0
3 years ago
3) The oceans and the atmosphere work together through global currents that do what?
belka [17]

Answer:

The correct answer is D)

Cycle energy and matter to support the biosphere as a closed energy system

Explanation:  

The earth as we know it is a closed energy system that is, matter cannot be introduced or removed from it. Sometimes, rare meterites enter into the system with minimal or no disruption.

Also, energy can enter and leave. The energy mostly referenced here is the sun.

Within the earths system, the lithosphere, hydrosphere, and biosphere materials and energy go through a cycle which helps to support life.

For example, water when heated up by the sun rises as vapour from the earth and oceans into the atmosphere where it cools and condenses. When it cools and condenses, it , in the form of rain, comes down on the earth and oceans. As rain falls down to the earth and runs off the rocks, rocks are broken down into smaller fragments and soils.  The hydrosphere comprises of all water bodies on earth. Besides the vapours which are evaporated from the same into the atmosphere, when volcanoes erupt they also send vapourised water into the atmosphere.

So because the earth is a closed system, a change in one sphere effects a change in others. An example is a change in the water cycle.

Cheers

8 0
3 years ago
A contusion is also known as a bruise and is an injury that occurs when:
Slav-nsk [51]
A contusion occurs when a strong blow or repeated blows from an object struck the body, crushing the underlying muscle fibres and connective tissues without breaking the skin.
A contusion can vary in severity depending on the object and location of the injury. For example a contusion to the brain may cause a concussion that can cause serious symptoms that require immediate medical attention
6 0
3 years ago
What is the purpose of degerming? Does it completely eliminate microbes?
madam [21]

Answer:

Explanation:

The degerming  is the act of handwashing. In this process, the microbes are removed by scrubbing the hands with a disinfectant usually a chemical, sterilizer, soap or detergent. This process will help in removing the microbes from the skin. It is a mechanical process of removing the germs or microbes without killing them.  

This process provides a temporary protection from microbes.

3 0
3 years ago
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