The reintroduction of gray wolves to yellowstone national park has contributed to a decline in the elk population and provided food for bald eagles and ravens.
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Answer:
Cardiac output
Explanation:
In the circulatory system, blood is pumped in and out of the heart to other body organs by veins and arteries.
The amount of blood that is pumped by the heart can be measured.
Cardiac output refers to the amount of blood that is pumped per minute by the heart.
It is an important measure because cardiac output indicates how efficient the heart meats the body demand
It is determined by the stroke volume and the heart rate.
Plant cells have several structures not found in other eukaryotes. In particular, organelles called chloroplasts allow plants to capture the energy of the Sun in energy-rich molecules; cell walls allow plants to have rigid structures as varied as wood trunks and supple leaves; and vacuoles allow plant cells to change size.
Answer:
d. ecological succession
Explanation:
Ecology Succession may be initiated either by formation of new, unoccupied habitat, such as from a lava flow or a severe landslide, or by some form of disturbance of a community, such as from a fire, severe windthrow, or logging.
Reference:
Wikipedia contributors. "Ecological succession." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, 10 Mar. 2021. Web. 23 Mar. 2021.
