Ascientist finds an unusual object and decides to study it. which observation indicates that the object is a living thing?

a.) it has an uneven shape.
b.) it is made of cells.
c.) it has a hard outer shell.
d.) it is found in water.

Select the correct answer. when carbon dioxide dissolves in water, it sometimes reacts with water to form carbonic acid as in this balanced equation: co2 + h2o → h2co3. if 495 milliliters of carbon dioxide at 25°c and 101.3 kilopascals reacts with excess water, what is the theoretical yield of carbonic acid? use the periodic table and the ideal gas resource a. 0.889 g b. 1.10g c. 1.27g d. 2.02g what's the answer! quick!

Can someone me with questions 12 and 13 plz.

Apush or pull that moves or changes and object when to objects touch