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Eddi Din [679]
3 years ago
8

Over the last 50 years there has been a noticeable increase in global temperatures, which of the following best explains this ph

enomenon?
A. decreased deforestation for agriculture

B. increased ozone layer depletion

C. decreased greenhouse gas emissions

D. increased burning of fossil fuels
Biology
1 answer:
Naily [24]3 years ago
5 0

Answer:

b

Explanation:

The carbon dioxide coming from our vehicles is really affecting the ozone layer

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How do water and sunlight affect decomposers ?
Dovator [93]

Answer:

As the volume of available water increases, the rate of decomposition also increases. Many decomposers secrete enzymes onto decaying matter and then absorb any dissolved molecules and sunlight allows things to grow out of decomposers allowing faster decomposition from the plant absorbing the other nutrients from the things in the decomposer making the soil rich and fertile.

5 0
3 years ago
How many dna molecules are present in your diploid cells
Tcecarenko [31]

Answer:

92 molecules

Explanation:

DNA or Deoxyribosenucleic acid is polynucleotide made up of several nucleotides containing the genetic information of an organism. In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA, tightly coiled many times around proteins called histones to support its stucture.

Human cells, like myself, contains 23 pairs of chromosomes (46 chromosomes in total). Each pair coming from each parent. Each chromosome is formed by two strands of DNA held together by hydrogen bonds forming the DNA double-helical structure. These two DNA strands form a base pair, which is a unit of two nucleotide bases bound to each other by hydrogen bonds. According to the complementary base pairing rule, Adenine (A) pairs with Thymine (T) while Guanine pairs with Cytosine (C).

Since there are 46 chromosomes in a diploid human cell and each chromosome consists of 2 DNA strands, then, there are 46 × 2 = 92 strands/molecules of DNA in each human diploid cell.

7 0
4 years ago
Use an example how the four earth system are connected
Sophie [7]
Like Geography, climate, times and environment system
4 0
3 years ago
In your own words, describe what information the visible DNA fingerprint provides for each DNA sample
Sidana [21]

Answer:

The visible DNA fingerprint can help extract DNA which, after analysis, can accurately identify the suspect or perpetrator of the crime.

Explanation:

DNA Fingerprinting:

  • DNA fingerprinting is a molecular analysis tool that can help identify a suspect in a crime through DNA extracted from fingerprints.
  • Specific patterns in the DNA, known as polymorphisms, can be identified through DNA fingerprinting.
  • The DNA fingerprinting process involves:
  1. Extraction and purification of the DNA from the fingerprint.
  2. PCR amplification to obtain high yield.
  3. Fragmentation of the DNA by use of restriction enzymes.
  4. Gel electrophoresis analysis of the fragmented DNA.
  5. Analysis of gel to compare the size of the bands.
7 0
3 years ago
Which of these example of chemical change? Breaking glass melting ice on the windshield burning gasoline denting a bumper
mihalych1998 [28]
Your answer is burning gasoline. if you think about it, none of the rest of the answers really involve chemicals. ice isnt known as a chemical, and so isnt glass. and if your dent a bumper, it doesnt make sense to add it as a chemical change. so your answer is burning gasoline. hope this helps.
3 0
3 years ago
Read 2 more answers
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