Answer: B) answer choices II and IV
Explanation:
heat at excessive amounts denatures proteins
When a critical temperature is reached proteins no longer function
b. coral reefs
c. rivers
d. ponds
B. coral reefs because marshes, rivers and ponds have nothing to do with the ocean ecosystem.
O The water would move into the cell and the cell would increase in size.
O The salt would move into the cell and the cell would increase in size.
O The salt would move out of the cell and the cell would decrease in size..
Answer:
The water would move out of the cell and the cell would decrease in size.
Explanation:
This question is depicting OSMOSIS, which is the movement of water from a region of high concentration (low solute concentration) to a region of low concentration (high solute concentration) across a semi-permeable membrane. This movement is caused when a concentration gradient forms between the two sides of the membrane.
In this case, an animal cell contains an internal salt concentration of 10% while the salt solution has a concentration of 30%. This means that the animal cell is hypotonic (contains high water concentration) to the salt solution, hence, water would move out of the cell and the cell would decrease in size
If an animal cell with an internal salt concentration of 10% is placed in a salt solution with a concentration of 30%, the water would move out of the cell and the cell would decrease in size.
If an animal cell with an internal salt concentration of 10% is placed in a salt solution with a concentration of 30%, the water would move out of the cell due to osmosis. The higher external salt concentration draws the water out of the cell, causing the cell to shrink or decrease in size.
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If you run an experiment with multiple variables, you won't be able to determine which variable ultimately led to the change.
Testing a single variable at a time enables you to assess the outcomes of your experiment to see how much a particular adjustment influenced the outcome.
If you test two variables simultaneously, you won't be able to determine which one caused the outcome.
Only one variable (the independent variable) is altered at a time in a science experiment to see how it affects the dependent variable.
Other variables that are either constant or vary throughout the experiment but are not thought to impact the results may also be measured by the researcher.
Therefore, scientist use to test just one variable at a time in an experiment.
Learn more about variables here:
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The correct answer is option D
Reflections from the surface warm the atmosphere.
Reason -Radiation is the process by which the earth radiates the heat absorbed by it during the day time. The earth absorbs the solar radiation during the day time and gets heated , during evening the earth emits the heat in the form of reflections i.e radiation due to which the hearth gets further heated up.