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Yuki888 [10]
2 years ago
7

What process recharges our groundwater.

Biology
1 answer:
Alja [10]2 years ago
5 0
Groundwater is recharged naturally by rain and snow melt , hope this helps :)
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One natural cause of extinction would be the massive __________ that occurred in the 1800s.
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Earth's history. In the worst one, 250 million years ago, 96 percent of marine species and 70 percent of land species died off. It took millions of years to recover.

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Read each description below and determine whether or not it describes a function or property of cerebrospinal fluid.
Alenkasestr [34]

Answer:

a. Produces antibodies in response to antigen exposure in the brain tissue

b. Found in the ventricles of the heart brain

c. Produces by te choriod plexus

d. Blocks blood toxins from brain tissue

e. Prevents concussions.

Explanation:

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Temka [501]

Answer: 20 amino acids

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3 years ago
HELP ASAP I WILL GIVE BRAINLIST
adelina 88 [10]

Answer:

1) CO₂

2) 0.2551 g

Explanation:

The balanced reactions are:

CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂

MgCO₃ + 2HCl → MgCl₂ + H₂O + CO₂

1) The gas produced is CO₂.

2) Calculate mass of CaCO₃:

(0.5236 g) (0.4230) = 0.2215 g CaCO₃

Convert to moles:

(0.2215 g CaCO₃) (1 mol / 100.1 g) = 0.002213 mol CaCO₃

Find moles of CaCO₃:

(0.002213 mol CaCO₃) (1 mol CO₂ / mol CaCO₃) = 0.002213 mol CO₂

Convert to mass:

(0.002213 mol CO₂) (44.01 g / mol) = 0.09738 g CO₂

Calculate mass of MgCO₃:

(0.5236 g) (0.5770) = 0.3021 g MgCO₃

Convert to moles:

(0.3021 g MgCO₃) (1 mol / 84.31 g) = 0.003583 mol MgCO₃

Find moles of MgCO₃:

(0.003583 mol MgCO₃) (1 mol CO₂ / mol MgCO₃) = 0.003583 mol CO₂

Convert to mass:

(0.003583 mol CO₂) (44.01 g / mol) = 0.1577 g CO₂

Total mass of CO₂:

0.09738 g CO₂ + 0.1577 g CO₂ = 0.2551 g CO₂

8 0
3 years ago
Which statements describe organic compounds
satela [25.4K]

Answer:

i don't know

Explanation:

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