How long has Earth been in its current era? A. 1.8 million years
B. 65 million years
C. 5 billion years
D. 200,000 years

Science A P E X

On a floor there are several 1-4 mm elongated drops leading away from a body lying in a pool of blood. the the forward wall there is a sigzag pattern and on the walls to the right side there is a linear patter

In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a ) moss sporophyteb) moss gametophyte bearing both male and female gametangiac) fern sporophyted) fern gametophyte bearing only antheridia

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol