The amount of Nitrogen built up in the joint, as well as the strength of muscles around the joint, and the cartilage that holds that joint in place
Answer: 
Explanation:
The Tropic of Cancer is one of the parallels (imaginary line around the Earth parallel to the equator) located in the northern hemisphere (currently its latitude is 
).
It is called "Cancer" because a long time ago, when the summer solstice occurred in the northern hemisphere (on June 20th or 21st), the Sun was in the constellation Cancer (the crab).
Now, if we were just in the North Pole, Polaris would by exactly over our heads (
over the horizon), but as we go south and find the Tropic of Cancer parallel, Polaris altitude will be approximately at an angle of over the horizon.
Hence, the altitude of Polaris measured by an observer at the Tropic of Cancer is .
Answer: Volcano
Explanation:
The Great Rift Valley is the site of major geological activity that stretches from Mozambique to the Middle East. Scientists believe that Africa and the Arabian Peninsula were joined together before they were separated by a process called rifting.
As the Earths tectonic plates begin to tear apart in this region, molten magma emerge from the earth crust to fill the void resulting in a separation.
Geologist estimates that the phenomenon which resulted in the great rift valley started 25 million years ago and gave rise to the Red sea. It is believed that the Indian Ocean flooded into the rift to form the Red Sea.
The.magma that seeps upward to fill crustal voids in the rift valley emerge mainly via volcanoes. Hence, many active and semi-active volcanoes are scattered throughout the region referred to as the Great Rift Valley, including Mount Kenya and Mount Kilimanjaro.
Answer:
yes,
Explanation:
because people need enough water for them to live and also water is used by many uses like washing
A is your answer (:
hope this helps
