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Mashcka [7]
3 years ago
13

What must always happen before a hypothesis can be formed

Biology
1 answer:
Akimi4 [234]3 years ago
6 0
A hypothesis must be testable other wise scientists can't do anything with it.
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If I hold my breath for 30 seconds, then my heart rate will increase or decrease?
cluponka [151]

Answer:

Your heart rate will increase due to the lack of oxygen.

Hope this helps.

Explanation:

8 0
4 years ago
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Charles darwin proposed that evolution by natural selection was the basis for the differences that he saw in similar organisms a
astra-53 [7]
If this is a true or false question then the answer is true.
3 0
3 years ago
Air at 1 atm was closed into a rigid container. It was then heated to a temperature of 911
otez555 [7]

Answer:

Final temperature, T2 = 2460 Kelvin.

Explanation:

Given the following data;

Initial pressure = 1atm

Final pressure = 2.7atm

Initial temperature = 911K

To find the final temperature, we would use Gay Lussac's law;

Gay Lussac law states that when the volume of an ideal gas is kept constant, the pressure of the gas is directly proportional to the absolute temperature of the gas.

Mathematically, Gay Lussac's law is given by;

PT = K

\frac{P1}{T1} = \frac{P_{2}}{T_{2}}

Making T2 as the subject formula, we have;

T_{2}= \frac{P_{2}}{P_{1}} * T_{1}

Substituting into the equation, we have;

T_{2}= \frac{2.7}{1} * 911

T_{2}= 2.7 * 911

Final temperature, T2 = 2459.7 ≈ 2460 Kelvin.

4 0
3 years ago
Match each feature created by erosion to the correct description
Leno4ka [110]

Answer: Please refer to Explanation

Explanation:

Stream - A series of connected channels that fills with water.

Rill - A small groove in soil created by runoff.

Gully - A channel of connected grooves created by runoff.

- Occurs when rills get bigger due to more runoff and then connect to become even bigger.

Tributary - One of many channels that connect to form a river.

- Tributaries feed rivers but never the open sea.

5 0
3 years ago
Why did it take 50 years for Darwin’s ideas to have an impact on Biology?
Murrr4er [49]
He needed to understand the concept of science to understand why it’s so important
4 0
3 years ago
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