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Nimfa-mama [501]
3 years ago
7

What is the purpose of controlling the environment when testing a hypothesis?

Biology
2 answers:
notsponge [240]3 years ago
7 0
It allows the scientist to determine the effect of the changed variable , it also allows samples and organisms to be tested under comfortable conditions
Lelu [443]3 years ago
7 0

Answer: The correct answer is: It allows the scientist to determine the effect of the changed variable.

Explanation: It ensures the reproduciblity of that experiment and hence, it increases the reliability of that experiment.

For example, if scientist is checking the effects of temperature on enzyme activity then other factors such as amount of enzyme, substrate, pH, pressure etc should be controlled as they can alter the results.

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Can the atmosphere change in its composition? Explain.
In-s [12.5K]

Hello! Allow me to help!

Your question: Can the atmosphere change in its composition?

My answer: Our atmosphere is made up of many different gases. The most common gases are nitrogen, oxygen and argon. But, the exact amount of each gas is always changing.

Why is my answer correct? Good question! Allow me to explain: Tropical deforestation not only has a large impact on the carbon cycle and climate, but also affects the chemistry of the atmosphere. Together with the carbon cycle and weather patterns land use can affect the concentrations of greenhouse gases like methane and ozone.

Over a vast amount of time, millions of years, the earth gradually cooled. When the temperature dropped enough, water vapor condensed and went from a gas to liquid form. This created clouds. From these clouds, the oceans formed and the oceans absorbed a lot of the carbon dioxide in the atmosphere.

Changes in atmospheric composition and the rest of the climate system would include temperature, rainfall, and humidity, which would affect the economic importance, geographical distribution, and management of diseases effecting crop production.

Hope this helps! UwU

-Maxwell

6 0
3 years ago
Read 2 more answers
How are things transported through the membrane
AlladinOne [14]

Answer:

The mechanisms of transport across the cell membrane are as follow: 1- simple diffusion, 2- facilitated diffusion, 3- primary active transport and 4-secondary active transport

Explanation:

The cell membrane is a selectively permeable structure capable of transporting substances by different mechanisms. Simple diffusion is a type of passive transport (i.e. does not require energy) where non-polar molecules (e.g. O2, CO2) pass across the membrane by a process that does not require energy from the cell. Facilitated diffusion is another type of passive transport where larger polar molecules (e.g., glucose and amino acids) pass across the membrane by using specific transmembrane integral proteins. On the other hand, primary active transport is a type of active transport that uses chemical energy (e.g., ATP) to move substances such as metal ions (Na+, K+, Ca2+) across the cell membrane against their concentration gradient. Finally, secondary active transport is another type of active transport where transporter proteins are used to couple the movement of ions (e.g., H+ protons) down their electrochemical gradient to the transport of another ions/solutes against their concentration/ electrochemical gradient.

6 0
3 years ago
ATP synthase is powered or driven by ______ flowing through it, in order to make ATP molecules.
Andre45 [30]

Answer:

B

Explanation:

8 0
3 years ago
Cross a homozygous dominant individual for brown hair with an individual who is blond hair . remember the starting are the paren
Vikki [24]

Answer:

The offspring will have brown hair(Hh)

Explanation:

The offspring will have brown hair(Hh) because of HH and Hh

3 0
3 years ago
PLEASE HELP!!! 50 POINTS!
Lelu [443]

Answer:

The answer is C

Explanation:

Soil is rock but broken down into tiny rock.

Hope this helps    :)

6 0
3 years ago
Read 2 more answers
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