BIOLOGY MIDDLE SCHOOL

During energy transformations, sometimes energy is destroyed.is that true or false

Answers

Answer 1
Answer: False. Energy is never destroyed, it can only be transformed. Energy is never lost as well.
Answer 2
Answer:

Answer:

False

Explanation:

Energy can neither be created nor destroyed. Energy can only be transferred from one form to another.

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Which type of water is the most dense? A. cold water with high salt content B. warm, salty water C. cold water with low salt content D. warm water with no salt

Answers

A. cold water with high salt content. The colder the water the more dense it is (ice is pretty dense). Adding salt to a liquid also makes it more dense.

Why bacteria in the soil. are necessary in this ecosystem 8th Grade Science

Answers

There could be a lot of reasons. To help break down food for the plants, kill off bad and harmful things that might damage the plant. 
Bacteria are important in the soil to maintain the nitrogen cycle. Certain type of bacterais help in nitrogen fixation. They also decompose dead and decaying matter into nitrogen compounds such as ammonia. The nitrogen and nitrogenous compounds in turm help the plant to grow.

When the plant dies, the bacteria again decomposes it into nitrogenous compounds. Not only plants, but also animals. The nitrogen then passes through various stages and then gets back to atmospheric nitrogen. Bacteria is an important part of this nitrogen cycle. 

Which process must occur first before any cell division can take place

Answers

Fertilization bc that's what i got and it was right

Final answer:

DNA replication is the process that must occur first before any cell division can take place.

Explanation:

In order for cell division to take place, a process called DNA replication must occur first. DNA replication is the process by which the genetic material (DNA) is copied to produce two identical copies. This ensures that each new cell will have an exact copy of the genetic material.

DNA replication occurs during the interphase stage of the cell cycle, specifically during the S phase. The S phase is the time when the cell prepares for division by duplicating its DNA.

During DNA replication, the double-stranded DNA molecule unwinds and separates into two separate strands. Each strand serves as a template for the synthesis of a new complementary strand, resulting in two identical DNA molecules.

Learn more about DNA replication here:

brainly.com/question/34852279

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Which carbohydrate provides energy for cows but only dietary fiber for humans?

Answers

Answer:

cellulose

Explanation:

cow eats grass mainly but not human.

Due to this reason, cow has cellulase enzyme that helps for digestion of grass which is not present i human.

So, cellulose is the carbohydrate present in cow bu absent in human.

Describe three reasons that why meiosis is important

Answers

Answer:

I) For gametes formation

II) For pollen grain formation

III) For seed formation

Explanation:

The importance of meiosis are:

- gamete formation

During meiosis, sex cells such as sperms and ova are formed in the testes and ovary respectively

- pollen grain formation

Pollen grain are formed in the anthers of flowering plants

- Seed formation

Seeds also known as ovules, are formed in the ovary of flowering plants

What are species of plants and animals that can take over an ecosystem

Answers

Answer:

I think its invasive

Explanation:
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