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FromTheMoon [43]
3 years ago
12

21) How long can penguins hold their breath while hunting?

Biology
2 answers:
Vitek1552 [10]3 years ago
6 0

Answer:

20 minutes

Explanation:

Emperor penguins can hold their breath for an amazing 20 minutes! They dive under the ice in the cold oceans around Antarctica when they hunt for food.

Alinara [238K]3 years ago
3 0

Answer:

the emperor penguin can hold their breath for 20 minutes

Explanation:

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iragen [17]

Answer:

it contains and protects the cell's DNA

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3 years ago
Mario and several friends spend a day at the beach. While watching the ocean waves crashing to shore, Mario wonders how much of
Zinaida [17]

Answer:

A

Explanation:

The correct answer here would be that <u>less than 3 percent of Earth's water is freshwater containing no salt.</u>

<em>Generally speaking, about 71 % of the earth is made up of water. Out of this percentage, approximately 97 % is found in the oceans with less than 3 % being freshwater. About 68.7 % of the freshwater is locked-up as glacier and ice, 30.1 % is groundwater, while the remaining 1.2 % represents surface and other forms of freshwaters which include ground ice and permafrost, lakes, atmosphere, rivers, swamps and marshes, soil moisture, and the freshwater in living organisms. </em>

The correct option is A.

3 0
3 years ago
The solutions in the two arms of this U-tube are separated by a membrane that is permeable to water and glucose but not to sucro
bazaltina [42]

Answer:

Intially the glucose concentration is levelled and then the liquid level in side A will rise.

Explanation:

  • Initially the liquid ob both sides are in isotonic condition.
  • The membrane is permeable to glucose so glucose will diffuse from higher concentration (2 M) to lower concentration (1 M) until the concentration become equal (1.5 M) on both sides.
  • Know, the Side A have 2 M sucrose and 1.5 M glucose and  side B have 1 M glucose and 1 M sucrose.
  • The side A will become hypertonic and side B will become hypotonic and water will start moving from side B to side A.

7 0
3 years ago
H2=3.4g+O2=10g —&gt; H2O= ?
tangare [24]

Answer:

mass of  1  mole of  H 2 = 3.4 g + O 2 = 10 g → H 2 O = 3614.35999774 g

Explanation:

6 0
2 years ago
Mitosis produces two identical daughters cells. True or False?
Anuta_ua [19.1K]

Answer: true

Explanation:

6 0
2 years ago
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