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REY [17]
4 years ago
9

The pond behind Serge's house, with all the living and non-living parts, is an example of a(n)

Biology
2 answers:
kari74 [83]4 years ago
8 0
B) Ecosystem - which includes the living communities and nonliving factors in an environment
d1i1m1o1n [39]4 years ago
5 0
It's an example of an ecosystem, so B.
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A student analyzed a viral genome and found that the genome had the following nucleotide composition. 28% adenine 20% thymine 35
egoroff_w [7]

Answer: Option A) Double-stranded DNA

Explanation:

First, the presence of thymine infers that the genome is DNA.

Then, to determine whether it is single or double stranded, we check if the sum of all nitrogenous bases is equal to 100%

A + C + G + T = 100%

28% + 35% + 20% + 17% = 100%

Since all bases makes 100%, we can conclude that the genome is a double stranded DNA

7 0
3 years ago
Read 2 more answers
What single cell flourished on earth​
LUCKY_DIMON [66]

Answer:

Prokaryotic single-celled organisms.

Explanation:

even though many debate on this. the earliest forms of like pretty much began with bacteria. During the Precambrian Timespan most life was composed of these single celled organisms.

3 0
4 years ago
ERRE
victus00 [196]

Answer:

Gaseous and low density is the phrase that best describes the outer planets of the solar system.

Let me know if this helps!

4 0
3 years ago
Can Earth's water ever be clean and pure again?
Yuliya22 [10]
There is  no such thing as pure water, when you  buy bottled water you think you're buying pure water but it's the same water.

I'm not going into the scientific facts here but the truth is 'pure' water does not exist because that means the water will have NOTHING in it which means they will have to remove the natural minerals and then the water will interact with any organic materials the water encounters, including air and plastic. 

<em>But the water is clean and healthy to drink. Just not pure.</em>


8 0
3 years ago
Read 2 more answers
.
4vir4ik [10]

Answer:

Explanation:FIRST YOU KNOW THAT ANGIOSPERMS HAVE FLOWERS NOT CONES

AND HEY CONTAING REPRODUCTIVE ORGANS IN THE FLOWER

6 0
4 years ago
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