Subject tropical rainforest
describe nutrient cycling of carbon (i. e., the steps of the carbon cycle) using examples of living things specific to the ecosystem you have chosen.
describe 1 natural and 1 human-caused disturbance to the ecosystem that you have chosen, and explain the damage done to the ecosystem.

One of the brightest comets of the 20th century was comet hyakutake, which passed close to the sun in early 1996. the orbital period of this comet is estimated to be about 30,000 years. find the semi-major axis of this comet’s orbit. compare it to the average sun-pluto distance and to the distance to alpha centauri, the nearest star to the sun, which is 4.3 light-years distant.

Which countries were controlled by france at the beginning of world war i? hint: use the map in the lesson to you answer this question. algeria burma cambodia indonesia vietnam

What is unusual about the iraq mountains ,in spite of their old age?