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Vadim26 [7]
2 years ago
6

HELP!!!

Biology
1 answer:
Phoenix [80]2 years ago
3 0

There's been a lot of bad news for polar bears recently. In 2007, for example, scientists reported that if global warming continues unabated, the population could drop two-thirds by 2050.

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Why do melting ice caps make Earth warmer?
musickatia [10]
The melting of the ice caps makes Earth warmer because less solar energy is reflected due to loss of Albedo
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3 years ago
Read 2 more answers
Alex complains of chronic insomnia. He has had a medical check-up and is healthy, yet he has difficulty falling asleep. What is
irga5000 [103]

Answer:

Go to bed at the same time every evening and wake up at the same time in the morning.

Explanation:

3 0
3 years ago
Mutation is a random and non-adaptive process. This was first proven by:
s2008m [1.1K]

Answer:

Option (d).

Explanation:

Mutation may be defined as the sudden, heritable change in the nucleotide sequence of the organism. Mutation may occur due to the errors in DNA replication or may occurs due to the mutagens.

Joshua and Lederberg experiment explains that mutation is the non adaptive and random process that occur in the organism. He used the replica plating of E.coli and grows them on streptomycin drug. The bacteria was grown on the the primary plate and they are transferred to the secondary plate with streptomycin drug in the growth environment. The resistant strain of bacteria grows in the streptomycin environment.The pattern of bacteria growth on the plate explained that mutation occurs randomly and it is a non adaptive process.

Thus, the correct answer is option (d).

4 0
3 years ago
Free nucleotides must be available in a cells nucleus to produce mrna strands. where do these free nucleotides come from
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<span>All four nucleotides (adenine, guanine, thymine, cytosine) are synthesized in the liver. The nucleotides can be synthesized de novo or recycled through salvage pathways. The synthesis occurs in the cytoplasm of the cell, not within a specific organelle. The components which are used for the nucleotide synthesis are derived from biosynthetic precursors of carbohydrate and amino acid metabolism, and from ammonia and CO2.</span>
8 0
2 years ago
I need it fast
guajiro [1.7K]

dude, you asked brainly the whole worksheet?? Do it yourself sreerag!!

6 0
3 years ago
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