What is the main cause of seasonal changes on earth?
a.
the rate of earth’s rotation
b.
the speed of the moon’s revolution around earth
c.
the distance between the earth and sun
d.
earth’s axial tilt and distribution of sunlight on the earth’s surface

Identify the composition of oceanic and continental crystal rocks. in a model of earth’s interior, where would these rocks appear?

Archaebacteria use for movement. celia flagella pili cell walls

In cattle a single gene with two alleles determines fur color the fur can be red white or roan roan fur has both red and white hair which of the following statements is true a the allele for roan fur color is dominant over red and white fur color b the allele for red fur color is dominant over white and roan fur color c the roan and white alleles are expressed independently of the other d the red and white alleles are expressed independently of each other