<span>Membrane receptor proteins relay signals between the cell's internal and external environments.
<span>
Transport proteins move molecules and ions across the membrane.</span></span>
Answer:
7. stream
8. runoff
9. stalagmite
10. gully
11. karst landscape
12. stalactite
13. rills
14. groundwater
15. flood plain
Explanation:
i fond all those on a quizlet about water erosion
<span>when athletes exercise,or their body works out, they intake more oxygen and let out more canbon di oxide. So their heart pumping speed increases which results in higher breathing rates and higher pulse. So they are physically more fit than a person who doesn't workout.</span>
The control group is the group that does not receive the experimental treatment. Experimenters use the control group to compare it to the experimental group in order to determine if the treatment had an effect. So, if there is the same result in both groups (decrease in the grass blades) it means that the given treatment had no effect on the experimental group and that the decrease is due to some other conditions.
