Which two structures are found only in plant cells?
a) vacuoles and ribosomes
b) chloroplasts and ribosomes
c) cell walls and chloroplasts
d) endoplasmic reticulum and cell walls

Imagine ? person stepping on a pin and pulling his or her foot way look at the réfléchir arc of the scenarios below

My question says on my assignment. read the following scenarios and decide which of the properties of life are being described. the first one is. katherine stopped on the way to school to grab some donuts. 2. because a dog cannot sweat, it has to pant in order to stay cool. 3. an elephant trun had no bone but 4,000 muscles. i have no idea what i am supposed to anwer. i can't find the answer in my notes or book that i can understand anyway

Which of the following describes a boom period? a. as one population increases, another population decreases. b. as one population increases, the other population also increases. c. as one population decreases, another population increases. d. as one population decreases, another population also decreases