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klio [65]
3 years ago
13

Will give brainliest HELP

Biology
2 answers:
Agata [3.3K]3 years ago
6 0

Answer: B

Explanation:

KiRa [710]3 years ago
3 0

Answer:

B

Explanation:

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On a certain day, Donnie observes the wind is blowing at 2 miles per hour. A bird nesting near Donnie's house flies three quarte
kipiarov [429]

Answer:

Air speed of bird is 4.17 mph

Explanation:

let the speed of the bird in still air be "X"

Speed of the bird when it flies in the direction of flow of wind = X+2

Speed of the bird when it flies in the opposite direction of flow of wind = X-2

The total time taken is equal to 12 minutes

= \frac{12}{60} \\= \frac{1}{5} hours

The distance in miles is equal to \frac{3}{4} = 0.75 miles

  \frac{0.75}{X+2} + \frac{0.75}{X-2} = \frac{1}{5}

On solving the above equation, we get -

2 X = (X^2 -4)*\frac{1}{0.75 *5} \\X^2 -4 -0.75 X =0\\X = 4.17

Air speed of bird is 4.17 mph

3 0
4 years ago
When the temperature on Earth drops abruptly, the land cools down faster than the sea.
alex41 [277]

Answer: density

Explanation:

Water's high heat capacity is a property caused by hydrogen bonding among water molecules.

8 0
3 years ago
Read 2 more answers
Unlike prokaryotes cells, eukaryotes cells contain
denis23 [38]
Eukaryotes cells have the ability to change into multi-celled organisms
6 0
4 years ago
What is Teddy's organization trying to accomplish?
Shalnov [3]

Answer:

The sensitization and awareness campaign by Teddy's organization was aimed to prevent greenhouse effects by preserving the integrity of the ozone layer in deflecting the dangerous ultraviolet radiation from the sun.

Explanation:

Products such as aerosols, refrigerators, and other substances that can release Chlorofluorocarbons (CFCs) had been banned due to their bye product of CFCs which had been studied to be harmful to the ecosystem, especially the stratosphere.

The released CFCs are volatile and escape faster due to their low relative density. Therefore, they tend to get into the upper atmosphere within a couple of minutes. When CFCs and Ultraviolet radiation reacts, it leads to the formation of mono oxides of chlorine and bromine. These fragments (Cl2O and Br2O) are capable of reducing the protective ozone shield into ordinary oxygen, which cannot prevent the penetration of harmful ultraviolet radiation into the earth, which cause mutation of DNA and destruction of protein content of the animals and plants on the earth, and finally to cancer and other genetic mutation problems.

6 0
3 years ago
Adenosine triphosphate (ATP) is considered to be the energy currency of life. It is the high-energy molecule that stores the ene
elixir [45]

ATP is broken down to ADP and Pi when energy is required to carry out the metabolic process. ATP is also released during the metabolic process.

<u>Explanation:</u>

The pumping of hydrogen ions across the inner membrane creates concentration gradient where there is higher concentration of the ions in the intermembrane space than in the matrix. This chemiosmotic gradient causes the ions to flow back across the membrane into the matrix, where their concentration is lower.

ATP synthase behaves as a channel protein thereby helping the hydrogen ions cross the membrane. It also has the ability to act as an enzyme, forming ATP from ADP and inorganic phosphate.

After passing through the electron transport chain, the used electrons joins with oxygen to form water. That is why oxygen is required. In the absence of oxygen, this process will not occur.

7 0
3 years ago
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