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adelina 88 [10]
3 years ago
13

The open ocean is among the least productive ecosystems on Earth. However, it contributes greatly to the overall productivity of

the biosphere. How can you explain this paradox?????
Biology
1 answer:
Talja [164]3 years ago
8 0
<span>While the open ocean produces little in terms of biomass, it contributes a great amount to the biosphere because of its serving as a habitat for small, primary producers as well as playing a big role in geochemical cycling.</span>
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How many molecules of eDNA would result from one molecule after three cycles of PCR
Nady [450]
8 molecules would result, since 2^3 = 8. Each time PCR is performed, the orginal number of molcules double.
7 0
3 years ago
Read 2 more answers
Which of the following clades is most likely to survive a series of catastrophic events over time? (1 point)
marishachu [46]
The correct options are as follows:
1. D.
<span>A clade refers to a group of organisms that are made up of evolutionary descendants that originated from a common ancestor. A clade that will survive a series of catastrophic events must be one that is made up of distantly related and diverse species. This is because, those species will have different type of adaptability capacity and will be able to adapt in different ways to the catastrophic events. Due to the differences in their ability to adapt, some of the specie will survive the catastrophic events even if others are wipe out.

2. B.
The mass extinction of one specie usually creates space for another new specie to survive. The new specie that survive the old one may possess the ability to adapt to the event that wipe out the former set of living organisms and thus, the new specie will be able to occupy and reproduce in their new space. Mass extinction is said to occur when the whole population of living organism living in an ecosystem are wipe out as a result of unfavorable conditions.

3. B.
Convergent evolution refers to the independent evolution of similar features in species that arise from different lineages. The species involved usually evolve these traits as a result of having to adapt to similar environments. Convergent evolution usually result in evolution of analogous structures, that is, structures that have similar forms or functions but which are not present in the last common ancestors of the species.

4. C.
 In evolution, gradualism refers to theory that states that evolution occurs slowly and gradually, thus, large changes in evolution are actually product of small changes that occur over a long period of time. The theory of gradualism was originally proposed by James Hutton in 1795.

 5. C.
Mass extinction refers to the wiping out of a a large number of species within a very short time. Mass extinction can occur as a result of severe unfavorable conditions that all the species in an ecosystem can not adapt to. An instance of this is a drastic decrease in global temperature after several massive volcanic eruptions.</span>
8 0
3 years ago
Nitrogen compounds are often used as fertilizers to increase plant growth.
lozanna [386]

Answer:

A

Explanation:

3 0
3 years ago
11. Which of the following is an example of a pigment?
AleksandrR [38]
The answer is C, Chlorophyll
6 0
3 years ago
Paul ekman and walter friesen traveled to new guinea to study the meaning of various facial expressions in the primitive south f
konstantin123 [22]

The conclusion they reached was that the six major emotional expressions appear to be universal.

<h3>What are facial expressions?</h3>

Facial expressions are the various movement of the face that shows the emotional state of an individual.

The six major emotional expressions are :

  • anger,

  • happiness,

  • fear,

  • surprise,

  • disgust and sadness.

These are be expressed by any individual in any part of the world.

Therefore, the conclusion they reached was that the six major emotional expressions appear to be universal.

Learn more about emotion here:

brainly.com/question/4692301

#SPJ1

4 0
2 years ago
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