Continental glacial erosion of the recent past is responsible for the creation of what large US feature: a. Grand Canyon
b. Rocky Mountains
c. Great Lakes
d. Florida Panhandle

Match the vocabulary word with its meaning

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.

Soil color only reflects the amount of organic matter present in soil.