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cupoosta [38]
3 years ago
13

A food change is an ecosystem flows from green algae, to freshwater snails, to small fish, and finally to large fish. Which orga

nism is the primary consumer?
Large Fish
Small Fish
Green Algae
Freshwater Snails
Biology
1 answer:
romanna [79]3 years ago
7 0

Answer:

The correct answer is - freshwater snails.

Explanation:

Producers are organisms that produce their own food and not depends on any other organism by the process of photosynthesis such as algae. Primary organisms on the other hand directly depend on the producers for their food and often gt killed by secondary consumers.

Freshwater snails are the perfect example of the primary consumer as they get their food and energy from algae and are the primary source of food and energy for small fishes.

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According to Darwin's theory of evolution, how do new species evolve?
Vikki [24]

Answer:

According to Darwin's theory of evolution, new species evolved as a result of natural selection.

Explanation:

  • Darwin proposed that speciation could readily occur through the prolonged action of Natural selection.
  • Natural selection allows the 'survival of the fittest' i.e. a more fit organism will have a better chance of survival than the less fit one.
  • The result of Natural selection could be positive,negative or balancing.
  • Evolutionary process in which the genetic changes confer a higher fitness to increase frequency of the organism over time in population is called positive selection.
  • Evolutionary process in which genetic changes decreases the organism's fitness resulting in its disappearance from the population is called Negative selection.
  • It may happen that a mutation benefits hetero-zygotes but not homo-zygotes and alleles maintain a intermediate frequency in population.This evolutionary process is called balancing selection.
8 0
4 years ago
Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 5 liters of natural oil for every 3 liters of
ELEN [110]

Answer:

Total 495 liters of natural oil are needed.

Explanation:

It is given that Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 5 liters of natural oil for every 3 liters of synthetic oil.

It means the ratio of natural oil and synthetic oil is

\frac{\text{Natural oil}}{\text{Petrolyn motor oil}}=\frac{5}{5+3}=\frac{5}{8}

Let in order to make 792 liters of Petrolyn oil he needs x liters of natural oil.

It means the ratio of natural oil and synthetic oil is

\frac{\text{Natural oil}}{\text{Petrolyn motor oil}}=\frac{x}{792}

Equate both ratios,

\frac{x}{792}=\frac{5}{8}

On cross multiplication we get

8\times x=5\times 792

8x=3960

Divide both sides by 8.

x=\frac{3960}{8}

x=495

Therefore total 495 liters of natural oil are needed.

6 0
4 years ago
Which of these is not a connective tissue? Adipose tissue Bone Blood Ligaments No exceptions; all of these are connective tissue
PSYCHO15rus [73]

Answer: All of these are connective tissue

Explanation:

4 0
3 years ago
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Maurinko [17]

Answer:

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7 0
3 years ago
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Question 4
Sladkaya [172]

Answer:

C

Explanation:

Show dogs learn Behavioral Adapatations that is their specific trait(s) (basically what makes them stick out from other normal dogs)

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