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DanielleElmas [232]
4 years ago
6

I dont know the answer to this question. please help me

Biology
1 answer:
yaroslaw [1]4 years ago
4 0

Answer:

A is correct...........

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Complete the sentence about the continental drift theory
sergeinik [125]

The correct answers are:

1. C. Western Africa;

2. B. Eastern South America;

Alfred Wegener has spent lot of times looking at maps, as it was his job. One day he noticed something peculiar, the western coast of Africa and the eastern coast of South America were an almost perfect match. They looked like peaces of puzzle that belong together. In his mind this was suggesting that these two continents had been merged in the past, and than broke apart. He later got proof about his theory by observing the sea mounts in the Atlantic Ocean.

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4 years ago
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Where do the cements that hold sediments together come from
podryga [215]
They come from crementation which is when  disolved minerals are deposited in tiny spaces...
 
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3 years ago
If the sequence of the 5'-3' strand is AATGCTAC, then the complementary sequence has the following sequence:
andre [41]

Answer:

3'-TTACGATG-5'

Explanation:

The DNA sequence is in couples where A is united T and G is united C, so what we do is replace in the complementary sequence the original nucleic acids, remember A-T, G-C.

5'-AATGCTAC-3'

3'-TTACGATG-5'

To remember: the DNA sequence is 5'-3' in one sequence and its complementary is inverse, what means it goes 3'-5'.

Also the T-A is united by 2 hydrogen bonds, and G-C is united by 3 hydrogen bonds.

3 0
4 years ago
Differentiate between biotic and abiotic factors affecting organisms in their environments?
marishachu [46]

Answer:

Biotic- Living things

Abiotic- Non- Living

Explanation:

Abiotic- example would be sunlight, water, air (oxygen)

Biotic- examples would be other organisms or other things living  

3 0
3 years ago
Which of the following phases ends just before cell division?
Norma-Jean [14]

Answer:

C

Explanation:

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