Due in will mark as brainliest if answered
1. design an experiment that determines the...
Biology, 22.01.2020 10:31 cuppykittyy
Due in will mark as brainliest if answered
1. design an experiment that determines the amount of time needed for a person's heart rate to return to an at-rest after exercise.
2. some large veins have one-way valves, which keep blood flowing in one direction. why don't arteries need similar valves?
valves move blood away from the heart, so they can typically move with the force of gravity and there is no need for valves to keep the blood flowing in one direction. but veins carry blood back to the heart, against the flow of gravity. so they are in more need of valves to make sure everything is flowing the same way.
Answers: 1
Biology, 21.06.2019 20:30
Describe at least 2 abiotic and two biotic factors found in the desert biome how do these abiotic factors interact with the biotic factors
Answers: 1
Biology, 22.06.2019 10:30
Natural selection changes allele frequencies because some survive and reproduce more successfully than others.
Answers: 1
Biology, 22.06.2019 12:40
In which part of the body is a ball-and-socket joint found?
Answers: 2
Mathematics, 02.06.2020 18:58
Mathematics, 02.06.2020 18:58
Mathematics, 02.06.2020 18:58
Mathematics, 02.06.2020 18:58
History, 02.06.2020 18:58
History, 02.06.2020 18:58
History, 02.06.2020 18:58
Computers and Technology, 02.06.2020 18:58
Mathematics, 02.06.2020 18:58
Mathematics, 02.06.2020 18:58