Riley is 3 years older than his sister. the sum of their ages if s represents riley's sister's age is shown as
a. 3s
b. b s + 3
c. 2(s + 3)
d. 2s + 3

The term equestrian relates to which animal? bulls cows horses pigs

Asap i will reward you brainliest for best which sentence about protists is accurate? all protists are unicellular and microscopic in nature. they have organelles, so protists are eukaryotic in nature. all protists make their own energy through photosynthesis.

The cluster of developing cells from conception until birth is called an