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Damm [24]
4 years ago
6

This is a period of time when extensive glacial ice covered much of earth, producing long-term climate change and causing the ex

tinction of many species on earth.
Biology
2 answers:
iragen [17]4 years ago
5 0

Answer:

ice age/ Quaternary glaciation

Explanation:

Ice ages have occurred in the earth history and do occur more or less regularly in a cycle. It is believed that ice ages are as a result of small changes in the earth's orbit and also dependent on the solar cycles. The temperatures on the earth reduce causing the ice sheets in the poles to extend to the subtropics.

Likurg_2 [28]4 years ago
4 0

Answer:

ice age

Explanation:

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Do humans have the right to impact the environment as much as<br> they do? Why why not?
DochEvi [55]

Answer:

yes

Explanation:

Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.

7 0
3 years ago
Distinguish between chromosomes, genes and DNA
Keith_Richards [23]

Explanation:

DNA is the physical molecule that makes up both chromosomes and genes. DNA is typically found as one of the major parts of chromosomes. Chromosomes are larger, sometimes microscopically visible, structures in cells made of DNA and a few proteins. Genes are much smaller sections of the chromosomes, made of DNA, that specifically code for how to make proteins or RNA needed by the cell.

Physically it’s sort of like, DNA is the cloth, a chromosome is the shirt, genes are the collar, the pockets, the sleeve cuffs, the tail, etc.

A better functional analogy is a culinary travelogue. (travel book with recipes)

The dishes produced by the recipes in the book would represent the proteins made by the DNA/chromosomes/genes, like brown hair or eyes, or five fingers, or feathers, or melanin, or digestive enzymes, or muscles, etc.

The genes would be represented by the recipes in the book. Each contains the information to make some dish. Some recipes might even allow a chef to be able to make different variations of that dish as it appears some genes can do.

A chromosome is well represented by the whole book. Like the chromosome, the book contains all the physical material to allow the book to function, ink and paper, cover, binding, glue, stitching, etc. The chromosome, and actual cookbook, are where everything is put together and organized in some pattern so the cell - in the case of a chromosome - or a chef - in the case of a cookbook - can actually use it. Both can be “opened” and used or put away and unused, or even moved around from one place to another.

The best match for the DNA would be the ink actually organized into the images on the pages of the book. Some of it would form an actual recipe. Just like some DNA makes up genes. However, much of the ink might have nothing to do with the recipe. It might just be stories from the author’s past or interesting sidebars, just as much of the DNA in many chromosomes has nothing to do with making the protein product but may be interesting and have information from the past or other ancillary trivia. In fact a travel book with recipes may have a 1,000 pages but only 30 - 50 of the pages actually contain recipes, very much like some DNA/chromosomes/genes.

3 0
3 years ago
In order for a polar compound to enter into the hydrophobic space of the phospholipid tails, it would need to break the many ___
Georgia [21]

Answer:

In order for a polar compound to enter into the hydrophobic space of the phospholipid tails, it would need to break the many <u>polar covalent bonds</u> bonds it has formed with the water and enter into a space where these bonds cannot form. Therefore, it is not a repelling action but a "lack of attraction".

Explanation:

<u>Water as polar solvent and the phospholipids:</u>

Water is very different on the molecular and that is due to the more polar nature, which is caused by the hydrogen bonding with in a H₂0 molecule. As the water molecules forms bonds with the other molecules in a specific formation of unequal polarities on its molecules. As the molecules have an unequal amount of charges present on it. For, the phospholipids they have two hydrophobic tails and the hydrophilic head. Through which they form most of the cell membrane structures.

In order to add any polar molecule to the hydrophilic head of the phospholipid there are many covalent bonds which are required to be broken, as these bonds include the covalent bonds found inside the molecular level. While, the hydrophobic tails of the molecules can't arrange themselves to form the bonds with the polar molecules more frequently.

6 0
4 years ago
I need help <br>please ASAP ​
steposvetlana [31]

Answer:

The seven gifts of the Holy Spirit are wisdom, understanding, counsel, fortitude, knowledge, piety, and fear of the Lord. While some Christans accept these as a definitive list of specific attributes, others understand them merely as examples of the Holy Spirit's work through the faithful.

Explanation:

thanks

5 0
3 years ago
Read 2 more answers
The zebra mussel arrived in the United States in 1985 on the ballast of a ship. Since this time, it has spread rapidly throughou
AveGali [126]
The answer is most likely the second choice. All answer choices could be possible, but in light of the others the second choice is far too specific, and there is no information in the prompt to even indicate that as a plausible answer choice.
3 0
4 years ago
Read 2 more answers
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