A boy of mass 8000g climbed a tree of height 5.5m calculateA. The weight of the boyB. The work done by the boy

*will mark brainliest to first correct answer* photosynthesis led to increasing levels during the later proterozoic eon? a. oxygen b. water c. carbon dioxide d. none of the above

High blood pressure occurs when there is too much blood flowing through the blood vessels at one time. by changing the amount of water in the blood, blood pressure can change. the excretory system can to lower blood pressure.which would most likely occur in the kidney? a)more water would be transferred from the nephron.b)less water would be absorbed into the nephron.c)the amount of water in the bladder would decrease.d)the amount of water in the blood would increase.

This law states that a planet's elliptical orbit around the sun sweeps equal amounts of area in an equal amount of time this means that each planet travels faster near the sun and slower farther from it law of ellipses law of inertia equat areas law harmonic law