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saul85 [17]
3 years ago
11

Why do some water masses in subsurface oceans have little or no oxygen? a. Large carnivores deplete oxygen in subsurface oceans

via their high rates of oxygen metabolism. b. Rates of photosynthesis are low in overlying waters, limiting the availability of oxygen. c. Waters underneath the surface oceans are cold and thus have a limited capacity to carry oxygen in solution. d. Rates of photosynthesis are high in overlying waters, supporting high rates of respiration in waters that deplete the oxygen there.
Biology
1 answer:
Nata [24]3 years ago
4 0

Answer:

The Correct option is "D"

Explanation:

By and large there is accessibility of plenitude daylight on a superficial level which gives different tiny fish and diatoms a space to develop, which additionally accommodates thick algal sprout. These algal sprout are obtrusive to such an extent that their thickness may exhaust the oxygen level and furthermore can slaughter the microscopic fishes.

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What type of organisms contains plasmid DNA
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Answer:

archaea and eukaryotic organisms

Explanation:

In nature, plasmids often carry genes that may benefit the survival of the organism, for example antibiotic resistance.

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Describe the three ways that biodiversity is defined
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!.) Biodiversity is the variation of a species throughout an ecosystem 
2.) Biodiversity forms the foundation of the vast array of ecosystem services that critically contribute to human well-being. and3.)  <span>the variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are a part; this includes diversity within species, between species and of ecosystems.

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The horned lizard confuses the predator by doing what
Alex
The horned lizard can confuse a predator by shooting blood from it's eyes, with control over the height (up to 5ft) and the direction of the blood.


5 0
3 years ago
Why does the heaviness of an object not relate to the density
4vir4ik [10]

Answer:

Scientists define density as the mass of a substance per unit volume. The word “per”

signals that thinking about density requires thinking about a relationship. It is the relation

between the mass (or weight) of one unit of a material and the volume of that one unit.

Density cannot be directly perceived or measured. It must be inferred from the

relationship of the mass and volume. However, it can be determined by calculation

which is how many schools teach it. To calculate density, you first measure the weight

and volume of an object precisely, then you divide the mass by the volume (i.e. d=m/v,

density equals mass divided by volume). So for example, the density of water is 1 gram

per cubic centimeter because a volume of 1 cubic centimeter of water has a mass of 1

gram. A substance which has a mass of greater than one gram per cubic centimeter

has a density greater than 1.0 gram per cubic centimeter; a substance which has a

mass of less than one gram per cubic centimeter has a density of less than 1.0 gram

per cubic centimeter.

Explanation:

8 0
3 years ago
What happens during the initiation step of DNA transcription? A ribosome attaches to the initiation codon of a completed mRNA st
Amanda [17]

Answer:

<u>A portion of the DNA unwinds and RNA polymerase attaches to the DNA within the transcription bubble.</u>

Explanation:

Transcription is the process in which DNA template is used to synthesize  mRNA.

There are three steps of transcription:

  • <u>Initiation</u>

It is the process in  which a portion of DNA unwinds and RNA polymerase binds to the promotor region on the DNA.

  • <u>Elongation</u>

It is the process in which RNA polymerase moves along the DNA template and synthesizes mRNA. During this process, unwinding of double stranded DNA takes place.

  • <u>Termination</u>

As the RNA polymerase moves along the DNA template, it finally reaches a termination signal and then stops synthesizing. It is followed by the detachment of the newly formed mRNA and RNA polymerase from the DNA.

<u>QUESTION:</u>

  • <u> A ribosome attaches to the initiation codon of a completed mRNA strand.</u>

This is the incorrect answer choice as this process does not happen in the process of transcription. This event happens<u> in the process of translation in which mRNA is used to synthesize proteins or amino acids. mRNA attaches to ribosome during this process.</u>

  • <u>RNA polymerase moves along the template strand of the DNA creating an mRNA strand.</u>

This is the incorrect answer choice as this event takes place in the process of elongation.

  • <u>A portion of the DNA unwinds and RNA polymerase attaches to the DNA within the transcription bubble.</u>

This is the<u> correct answer choice as this event takes place in the process of initiation of transcription</u>

  • <u>The mRNA detaches from the RNA polymerase as the RNA polymerase leaves the DNA strand.</u>

This is the incorrect answer choice. This event takes place in the event of termination of transcription.

3 0
3 years ago
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