A scientist is investigating how the amount of available water affects plant growth in a rainforest. Although all of Earth's spheres are interconnected, which of Earth’s spheres does the scientist’s investigation focus on?

Nwhat way does renewable energy differ from nonrenewable energy?

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.

Stages 1 and 4 of the demographic transition are similar in that