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Liono4ka [1.6K]
3 years ago
11

Explain how the ozone hole was found and what the UN did to help it

Biology
1 answer:
Lemur [1.5K]3 years ago
3 0

The ozone hole over the Antarctic has begun to heal, according to a new study, more than 30 years after its discovery. ... The stratospheric ozone layer protects Earth from the sun's harmful ultraviolet (UV-B) rays, which can cause skin cancer and cataracts in humans, and physiological damage in animals and plants.

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Which process could occur in maple trees to decrease the chromosome number in pollen cells from 52 down to 26?
andrew11 [14]

Answer:

Meiosis

Explanation:

In a process of meiosis a sing cell divides twice to produce four daughter cells which contains half the amount of. genetic information These cells are sex cells. These four daughter cells consists of half the number of chromosomes of the parent so they are haploid. This is the reason in maple tree the chromosome decreased from 52 to 26.

4 0
3 years ago
PLEASE HELP ME !!!!!!!!!!!!!!<br> Please answer these questions!!!!!!!!
Delvig [45]
You are in college and u don't know this
5 0
3 years ago
Are human beings still evolving? are we evolving in a specific way?
zloy xaker [14]

Answer: We are evolving to the environment, and the changes around us. And those that don't die

Explanation:

They put pressure on us to adapt in order to survive the environment we are in and reproduce. It is selection pressure that drives natural selection ('survival of the fittest') and it is how we evolved into the species we are today. Genetic studies have demonstrated that humans are still evolving.

6 0
3 years ago
An animals long period of inactivity during winter is called what
Murrr4er [49]
Hello, sorry this is a little late.

I believe the correct answer to your question, "an animals long period of inactivity during winter is called what" would be Hibernation.

Hibernation is when some animals (examples would be bears, and wild rabbits) sleep throughout the entire season of winter, when the temperature is too cold for them. They spend time before hibernation usually stocking up food, and creating a warm place for them to stay.

Hope this helps, and have a great day! :)
8 0
4 years ago
Activity 2<br> Label the parts of the female reproductive system​
amm1812

Answer:

See explanation

Explanation:

The female reproductive system is composed of internal and external sex organs. These organs are immature at birth but develops during puberty and enable the production of gametes or sex cells, and are also equipped with structures to carry a foetus during pregnancy.

The exterior of the female reproductive organ consists of the vagina and its associated structures. The vagina now leads to other internal structures in the female reproductive system such as uterus, fallopian tubes, cervix, and ovary.

An image of the full anatomy of the female reproductive system is shown in the image attached to this answer.

Image credit: topperlearning

8 0
3 years ago
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