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Triss [41]
2 years ago
12

15. A geologist discovers a sample of fine-grained rock made up of very small crystals. Based on its physical appearance, what c

an the geologist conclude about the rock?
Biology
2 answers:
Kipish [7]2 years ago
7 0

Answer:

It formed from rock that cooled quickly

Explanation:

B.

kiruha [24]2 years ago
6 0

Answer:

It is an extrusive igneous rock

Explanation:

Based on the physical appearance, the geologist can make an accurate conclusion about the rock's formation and in which type of rocks does it belong. The fine-grains made up of small crystals give away clues about the formation of the rock. Fine grains with small structures occur when the lava reaches the surface and cools off very quickly, thus not giving the crystals enough time to grow, so they are very small. The geologist can classify this rock on base of this information as an igneous rock, as it has been formed from lava, and as an extrusive igneous rock, as the fine grains and small crystals only occur when the lava cools of quickly on the surface.

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A total of 100 Students and 35 chaperones are going on a field trip to the Smithsonian institution in Washington DC write each r
gogolik [260]

Answer:

Ratio of students to chaperones = 20 / 7

Explanation:

Given:

Total student = 100

Total chaperones = 35

Find:

Ratio of students to chaperones

Computation:

Ratio of students to chaperones = 100 / 35

Ratio of students to chaperones = 20 / 7

4 0
2 years ago
Write a letter to your headmaster why moral lesson should be instill into students ​
Gnoma [55]

Dear Mrs. Been.

In view of the importance that you have in our educational environment in relation to the position of headmaster that you occupy, I would like to emphasize the importance of classes with moral lessons, in the hope that you will authorize and encourage this type of lesson in our school.

The most important positive point of adopting this type of lesson is to teach students to distinguish correct and incorrect elements, about behaviors and concepts. This will allow for the formation of conscious adults with great rational capacity.

Another positive point is the ability to encourage students to solve ethical and moral problems that develop from a non-linear point of view, as most problems in the real world present themselves. By seeing and solving these problems in the school environment, students will be better prepared for the future that awaits them.

Last but not least, I would like to point out that students who have well-stimulated and trained moral concepts are better able to promote not only personal benefits, but also social, political and economic benefits for the communities in which they operate.

I look forward to your comments on this suggestion.

Kind regards,

Mary Lang

4 0
3 years ago
Which of these substances is commonly derived from animals for medical purposes?
katovenus [111]

Answer:

Estrogen

Explanation:

Estrogen are hormones that increase the development and maintenance of female characteristics in the human body. Estrogen is involved in the development of a range of health issues.

5 0
3 years ago
Read 2 more answers
Which of the following inventors of the 1870s had a directing Major Impact on the prairie ecosystem​
Aleksandr [31]

Answer:

The steel plow and barbed wire

Explanation:

It was in 1837 when John Deere, a blacksmith from Illinois invented a steel mouldboard plough that was strong enough to cut through the stubborn roots of the prairie grasses. This invention turned millions of acres of prairie land into fields for arable crops and grazing ground for huge herds of domesticated cattle. The starving Indians who were displaced resorted to slaughtering the bison in 1872 to 1874 that resulted in the decrease of its population from 7.5M animals to about 750 only.

5 0
3 years ago
5. Why might a cell need to phagocytose?
stich3 [128]

Answer:

Phagocytosis is a critical part of the immune system. ... By knowing the enemy, the cells of the immune system can specifically target similar particles circulating in the body. Another function of phagocytosis in the immune system is to ingest and destroy pathogens (like viruses and bacteria) and infected cells.

Explanation:

3 0
2 years ago
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