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tekilochka [14]
2 years ago
12

Why is the Earth’s core made up mainly of iron while the crust contains mostly silicate minerals?

Biology
2 answers:
inn [45]2 years ago
8 0
Correct answer:
"<span>D. because iron is denser than silicate minerals"

Considering the formation of the Earth. We know that Earth's mass was formed by accretion. Over time, many many years, the material started to be organised by densities thanks to gravity. The Earth's core is mainly made out of iron because iron is denser than silicate materials which are the most common on the Earth's crust. </span>
solong [7]2 years ago
3 0
B. is the answer 
i hope
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According to a famous article by Max Kleiber*, the scaling of the metabolic rate or energy consumption for mammals Pₘₑₜₐᵦ (measu
Luden [163]

Answer:

The scaling exponent will be 0.75

Explanation:

According to a famous article by Max Kleiber*, the scaling of the metabolic rate or energy consumption for mammals Pmetab (measured in kcal/day) with the body mass Mb (measured in kilograms) is  P metab = 70 Mb^0.75 .

What is the scaling exponent (the quantity x in a scaling law A = cMbx) for the specific metabolic rate as a function of the animal’s body mass?

he scaling of the metabolic rate or energy consumption for mammals P=kcal/day

Mb=body mass in kilograms

Comparing

P metab = 70 Mb^0.75 .

with A = cMb^x

the scaling exponent will be 0.75

metabolic rate is the energy(in kilojoule) consumed at rest. it accounts for the highest amount of energy a body consumes daily

5 0
2 years ago
A cell is in a equilibrium with its surrounding at 30 degrees Celsius. The molarity of surrounding sucrose solution is 0.5m. Cal
Travka [436]

Solute potential of a solution is calculated using the formula,

Ψ_{s}=-(iCRT)

Where,

Ψ_{s}is the solute potential of the solution,

<em>i</em> is the degree to which the solute ionizes(ionization constant) in solution = 1, as sucrose is a nonelectrolyte.

C is the concentration of the solution in molarity = 0.5 M

R is the gas constant or the pressure constant = 0.0831 L.bar/(mol.K)

T is the temperature in Kelvin scale = 30^{0}+273 =303 K

Calculating the solute potential of the surrounding sucrose solution:

Ψ_{s}=-(iCRT)

              = -(1 * 0.5 M * (0.0831 L.bar/(mol.K))* 303 K)

              = 12.6 bar

Therefore, the solute potential of the surrounding solution is 12.6 bar

7 0
1 year ago
Cephlochordates have a backbone that extends from their tail to where? their gills their anus their heart their head
Lostsunrise [7]
Pretty sure it’s to their neck.
5 0
1 year ago
BOTH acids and bases A) turn red litmus blue. Eliminate B) are a component of soaps C) donate protons to solution. D) conduct el
Alecsey [184]

C is incorrect

Both acids and bases produce ions in solution, are electrolytes, and conduct electricity in solution. Although red litmus is an indicator, it does not change color in an acid, acids are proton donors while bases are proton acceptors. Soaps often contain bases, not acids.

D) conduct electricity in water. is the correct answer

3 0
1 year ago
Read 2 more answers
A scientist must always try to avoid _____________ in scientific experiments.
goblinko [34]

A scientist must always try to avoid bias in scientific experiments. It is important for scientist to avoid leaning into their bias when trying to confirm their hypothesis. As much as possible the scientist should be able to follow the scientific method to avoid bias. 

8 0
2 years ago
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