Answer:
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Explanation:
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Conservation is needed for biodiversity. If one organism (plant or animal) goes extinct it disrupts the food chain and the ecosystem forcing plants an area to go extinct themselves or to migrate. The greater the biodiversity the the healthier the ecosystem is and vice versa.
Answer:
Superior vena cava, Inferior vena cava, Coronary sinus.
Explanation:
Superior vena cava, Inferior vena cava and Coronary sinus deliver the oxygen poor blood to right atrium.
Superior vena cava delivers the deoxygenated blood from the upper half of the body to the right atrium.
Inferior vena cava delivers the deoxygenated blood from the lower half of the body to right atrium.
Coronary sinus delivers the oxygen-poor blood from the heart muscles to the right atrium.
Answer:
3) away from the area where it is more concentrated
Explanation:
A substance that moves across a cell membrane without using the cell's energy tends to move away from the area where it is more concentrated.
It is known as passive transport.
It is the process in which substance without using the cellular energy tend to move down the concentration gradient.
It is also known as simple diffusion.
All other options are incorrect because,
In case of active transport substance move against the concentration gradient i.e to wards the area of higher concentration.
This process require energy.
