A white dwarf is _____. a small star before it enters the main sequence stage the stage after a red giant finishes nuclear fusion a star that is about to become a black hole a small black hole

Answers

Answer 1

Answer:

The correct answer is the stage after a red giant finishes nuclear fusion

A white dwarf can be defined as a star that has completed its nuclear fusion. This is a type of star which is at the stage of completion of its nuclear burning , it expels its outer material which creates a planetary nebula. The core of star becomes hot and white in color. It takes millions of year for its cooling.

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Which of the following is a contributing reason behind emerging disease? a. The lack of evolution in hostsB. The overuse of antibioticsC. The absence of migration or travel in organismsD. The lack of evolution in pathogens

Answers

The correct answer should be B. The overuse of antibiotics. Since antibiotics as their name says kill biotics, that is, they fight against bacteria, they were used a lot and bacteria started developing resistance to them which is a common thing. Since it's difficult to find new types and the trials last long, new diseases are emerging faster than we can create medicine for them.

What would happen if photosynthesis on Earth stopped?

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The plants that use photosynthesis would die because the plants would not create food. They would die of hunger. Without another source of food, most of the animals would likewise die off to.

8. Autosomes are _______ chromosomes.

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Autosomes are non-sex chromosomes, meaning they are non-sex determining chromosomes inside cells. Humans naturally have 46 chromosomes in each body cells; 44 of these are actually autosomes that a person inherits from his/her parents. All persons get 22 autosomes from the mother and the other 22 autosomes will be coming from the father. These autosomes always come in pairs and since everyone has 44 of these autosomes in their cells, it should be noted that there are only 22 types that are obviously numbered from 1 to 22.

Which term includes the other three? A.
commensalism

B.
mutualism

C.
symbiosis

D.
parasitism

Answers

C.) "Symbiosis" here includes the other three

Hope this helps!

Symbiosis means an interaction between two organisms, while commensalism, mutualism, and parasitism are each examples of symbiotic relationships.

What three biomes get the warmest

Answers

The answers is tropical dry forest, tropical savanna, and temperature grassland.

what happens to the thickness of the uterine lining when the level of progesterone reaches its highest level?

Answers

Answer:

Becomes thick with blood vessels passing through

Explanation:

Progesterone levels are the highest in the middle of the luteal phase i.e at the eighth or ninth day of menstural cycle. it is the hormone which is released after ovulation. It is produced by the corpus luteum (an area created by the collapsed follicle) which consists of ovulated egg. At this stage the uterus lining gets thick and also estrogen is at high level. If the conception does not takes place the level of progesterone falls as the corpus luteum starts to break.

What happens at that point is that the lining sheds through the vagina otherwise known as the menstrual cycle which occurs if the egg has not been fertilized.

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