Which statement is true of homo sapiens?

a. the evolved after the cro-magnons.
b. the have been earth's only hominine for the last 24,000 years.
c. they became extinct about 1 million years ago.
d. they coexisted with homo habilis for several thousand years.

Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3: 1. if the allele are designated (r & r) receptively. what is the probable genotypes of the round seeds which produced f 1 ? rr & rr rr only rr & rr rr only rr only

The carbon cycle is best defined as a process in which a. carbon changes from inorganic forms to organic forms and back b. carbon is changed into other elements such as oxygen or nitrogen c. carbon is continually created from the sun’s energy by plants d. carbon is consumed and regenerated from other elements such as oxygen and nitrogen

Which direction does the energy flow in this energy pyramid ?