Biology, 06.11.2020 20:50 gingerham1
Which statement best describes a change that usually takes place in the human body when the heart rate increases as a result of exercise?
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A. More oxygen is delivered to muscle cells.
B. Blood cells are excreted at a faster rate.
C. The rate of digestion increases.
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D. No hormones are produced.
Answers: 3
Biology, 21.06.2019 22:30
How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?
Answers: 1
Biology, 22.06.2019 08:10
Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?
Answers: 2
Biology, 22.06.2019 13:50
The serengeti plains are part of the african savanna ecosystem and are home to a variety of different species of plants and animals. the serengeti plains experience a seven-month period of seasonal drought each year, during which the ecosystem receives only four inches of rain and the availability of some resources becomes very scarce. which type of limiting factors does the seasonal drought in the serengeti plains affect?
Answers: 2
Biology, 23.06.2019 08:30
On the bahamian island of andros, mosquitofish populations live in isolated freshwater ponds that were once united. currently, some predator-rich ponds have mosquitofish that can swim in short, fast bursts; predator-poor ponds have mosquitofish that can swim continuously for a long time. when placed together in the same body of water, the two kinds of female mosquitofish exhibit exclusive breeding preferences. if one builds a canal linking a predator-rich pond to a predator-poor pond, then what type(s) of selection should subsequently be most expected among the mosquitofish in the original predator-rich pond, and what type(s) should be most expected among the mosquitofish in the original predator-poor pond?
Answers: 2
Which statement best describes a change that usually takes place in the human body when the heart ra...
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