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SashulF [63]
3 years ago
5

Describe the main properties that scientists measure when they study populations

Biology
1 answer:
gogolik [260]3 years ago
8 0
<span>Size, density, and growth rate are the three main ones. There is also dispersion, age structure, and survivorship. </span>
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two organs of the digestive system and how the come together to maintain the homostasis. pleasee help me its important.
Nataly_w [17]
Endocrine and nervous
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3 years ago
Celery is composed of millions of plant cells. Do these cells contain any water?
koban [17]

Answer:

yes

Explanation:

plants need water to live plants store water in vacoule(s)

6 0
3 years ago
A lab technician is preparing agar medium. The medium requires 21 grams (g) of
docker41 [41]

Answer:

21.81grams

Explanation:

According to the question, an agar medium requires the following ingredients: 21 grams (g) of

agar, 500 mg of dextrose, 3 dg of sodium, and 1 cg of potassium per 1,000 milliliters (mL) of distilled water.

Hence, the dry ingredient contain 21grams (g) of agar, 500milligrams (mg) of dextrose, 3decigrams (dg) of Sodium, and 1centigrams (cg) of pottasium.

We need to convert all units (not in grams (g)) to grams.

1grams = 1000milligrams

500 milligrams = 500/1000

= 0.500grams.

1grams = 10decigrams

3decigrams = 3/10

= 0.3grams

1grams = 100centigrams

1centigrams = 1/100

= 0.01 grams

Therefore, we have 21g, 0.500g, 0.3g, and 0.01g

The total dry weight of the ingredients will be:

21 + 0.500 + 0.3 + 0.01

= 21.81grams

3 0
3 years ago
Which statements describe continental crust? Select the three correct answers (apex)
bogdanovich [222]

Answer:

B, C, D

Explanation:

The following statements are true regarding the continental crust;

It is between 25 and 70 km thick

Its made of all types of rocks

It contains silicate minerals high in sodium, potassium, aluminum, and calcium

4 0
3 years ago
Read 2 more answers
During a strenuous soccer game , a student is sweating a lot. Which activity would help maintain water balance ?
fgiga [73]
I believe it is D. but i am unsure and i hope i helped u :)
8 0
3 years ago
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