Answer:
Organisms depend on and compete for both biotic and abiotic factors in an ecosystem. A few abiotic factors are sunlight, water, and territory. Plants compete for sunlight and water, and they depend on those factors for their survival. Biotic factors would include plants, bacteria, and other animals. Consumers of these biotic factors compete for them because they depend on them for their survival.
Explanation:
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Answer:
The correct answer is option c. "the tend-and-befriend response".
Explanation:
The tend-and-befriend response is a natural behavior that function as a response to stress. It refers to look for the protection of the offspring and ask for help in the social group at which she or he belongs. The tend-and-befriend response is more common among women than men, because the primary response of men when dealing with a stressful situation is to fight-or-flight.
Select all the correct answers. Which two statements are true about energy transformations?
Energy is never released from an object as heat.
Energy is never transformed between kinetic energy and potential energy.
<u>Energy is never created. </u>
Energy is never completely transformed.
<u>Energy is never destroyed.</u>
Paramecium needs contractile vacuole due to its different environment from other protozoan that lives in salt water.
<h3>
Need of contractile vacuole for paramecium</h3>
In salt water, the solute concentration outside the cell is more than inside the cell so the water flows out of the cell down the concentration gradient. Therefore contractile vacuoles are not required for expelling water for most protozoan living in salt water.
While on the other hand, paramecium lives in fresh water so contractile vacuole is required for removing excess water so we can conclude that paramecium needs contractile vacuole due to its different environment from other protozoan that lives in salt water.
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