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zhenek [66]
3 years ago
6

Many different relationships exist between organisms in an ecosystem. These relationships include competition for food, shelter,

and
other resources as well as predation in which one organism kills and consumes another for food. There are also symbiotic
relationships. Symbiosis is a close relationship between two species in which at least one species benefits. For the other species, the
relationship may be positive, negative, or neutral. There are three basic types of symbiosis: mutualism, commensalism, and parasitism.'
Evaluate each of the relationships depicted in the choices. Select ALL the relationships illustrating commensalism.
es 0)
A)
Hermit crabs use the shells of dead snails for homes.
B)
Egrets perch on the back of cows and eat the insects that have been
disturbed as the cattle forage for food.
C)
Fleas get food and a warm home by living on hosts such as dogs or cats
and biting them to get nutrients from their blood.
D
The Egyptian Plover or "Crocodile Bird" will fly into the crocodile's open
mouth and feed on the decomposing meat stuck between their teeth
E)
The pilot fish helps to rid the shark of parasites and clean away fragments
of food caught between their teeth, it benefits from protection against
other predators.
Biology
1 answer:
liberstina [14]3 years ago
5 0

Answer: A . Hermit crabs use the shells of dead snails for homes & B. Egrets perch on the back of cows and eat the insects that have been distributed as the cattle forage for food.

Explanation: I just did it on usatestprep

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In the process of carbon fixation, RuBP attaches a CO2 to produce a six-carbon molecule, which is then split to produce two mole
mars1129 [50]

Answer:

The 3GP is reduced to 2 molecules of 3 carbon compounds called TRIOSE PHOSPAHATE (TP) This reaction involves the  supply of ATP and Co enzymes NADPH.

Most of the compound TP, is converted to regenerate ribulose biphospate,(RuBP) a compound for fixing C02,The reaction involved ATP. The remaining amount  of TP condense to Hexose Phosphate  used to produce glucose, cellulose, fatty acids amino acids .

Since there is continuous supply of RuBP;with enzyme RUBISCO and oxygen the Calvin Cycle continues.

Explanation:

6 0
3 years ago
7. In a free market economy, decisions are made according to the laws of
Nata [24]

Answer:

A

Explanation:

In its best form, a free market economy will determine a price by supply and demand.

Local governments can't determine anything unless it is a local commodity or product which will not be used anywhere else. Even then, the government is interfering with supply and demand.

National government -- same answer as local government. Any government interference does not result in a free market economy.

There are not enough wealthy citizens around to influence many markets.

Your best answer is A

8 0
3 years ago
Read 2 more answers
How are atoms formed? descibe on your own words.
tigry1 [53]

Answer:

Atoms are made up protons and neutrons. An atom is also very small, it is also a unit of matter.

Explanation:

"An atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across. They are so small that accurately predicting their behavior using classical physics—as if they were billiard balls, for example—is not possible due to quantum effects."

-Wikipedia

6 0
3 years ago
Products of glycolysis include:
Sveta_85 [38]

Answer: c. 2 pyruvate molecules

Explanation:

Glycolysis is the first step it the cell respiration cycle. It turns one molecule of glucose into two molecules of pyruvate by a series of reactions catalyzed by different enzymes.

It starts by using 2 ATP to turn glucose into fructose-1,6-bisphosphate, which then divides in two and releases 4 ATP when it turns into two pyruvate molecules.

Thus glycolysis consumes 2 ATP and releases 4 ATP (giving a net gain of 2 ATP) and 2 pyruvate molecules.

7 0
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1. Why is Carbon important?
Arturiano [62]

this is correct answer oky

7 0
3 years ago
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