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3 years ago

Which example is not a kind of symbiosis? A. estivation B. commensalism C. parasitism D. mutualism

Chemistry

2 answers:

aliya0001 [1]3 years ago

4 0

Your answer is estivation.

7nadin3 [17]3 years ago

4 0

Answer:

C. parasitism

Explanation:

Symbiosis is an interspecific ecological interaction, that is, between organisms of different species, occurring in a compulsory and harmonious manner, allowing reciprocal advantages for the species involved. This association is permanent, causing dependence indispensable to the survival of the parties, and can no longer detach from each other, due to the collaboration that each exerts on the metabolism of its dependent, probably harmful if they were separated.

Parasitism is an association between two organisms, but it is the type of association that does not promote benefits to both living organisms, on the contrary, in parasitism an organism causes a malfunction in the body of another organism, but its development is favored. For this reason, parasitism cannot be considered a kind of symbiosis.

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Leno4ka [110]

Answer:

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Explanation:

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3 years ago

The lead in lead pencils is pure carbon, C. The mass of a period mark is 0.00010 g. How many C atoms (C’s) make the period Mark?

Musya8 [376]

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3 years ago

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jek_recluse [69]

Explanation:

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3 years ago

What did Einstein come up with in his spare time after working as a patent clerk

mixas84 [53]

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7 0

3 years ago

Can anyone help me out please?

Wewaii [24]

Answer:

Qustion 7: 

Answer is → "c. Calcium ions and sulfate ions join together to form an insoluble compound"

Question 8: 

Answer is → b. ²³⁹Pa

Question 9: 

Answer is → "c. 1/3 the pressure in container B"

Explanation:

=================================================================

Qustion 7: 

from the graph:

a. precipitation reactions only occur when solution temperature are decreased.

this option is wrong due to precipitation reaction can occur at room temperature or even at elevated temperature.

b. Sodium ions and chloride ions repel each other when they are in a solution.

Also, this is a wrong statement because sodium ions is positively charged and attract the negatively charged chloride ions.

d. the creation of precipitate adds mass that was previously non-existent.

From graph it is clear that the mass doesn't changed before and after the reaction remain constant (=300.23 g).

So, the right answer is

→ "c. Calcium ions and sulfate ions join together to form an insoluble compound"

=================================================================

Question 8: 

According to the equation :

²³⁹U → ________+ ₋₁⁰e
uranium(239) loses a beta particle and so the mass numer will not change ( remains 239).

So, the right answer is

→ b. ²³⁹Pa

=================================================================

Question 9: 

We can use the general law of ideal gas: PV = nRT.

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R is the general gas constant,

T is the temperature of the gas in K.

If n and T are constant, and have two different values of P and V:

Pₐ * Vₐ= P(b) *V(b)

from the graph:

Vₐ= 9.0 L.

V(b)= 3.0 L.

∴ Pₐ = [P(b) * V(b)] / Vₐ = [P(b) * 3.0 L] / 9.0 L = 1/3 P(b).

So, the right choice is:

Answer is → "c. 1/3 the pressure in container B"

=================================================================

3 0

3 years ago