Which statements describe density? Check all that apply. O Density is a chemical property of an object
D The density of an object is constant.
O Density is a derived unit of measure.
O Density is the sum of the mass and volume of an object.
The density of an object determines whether it will sink or float.

O Density is a derived unit of measure.

O Density is the sum of the mass and volume of an object.

Explanation:

I guess

o density is a chemical property of an object.

o Density is the sum of the mass and volume of an object.

Explanation:

i guess

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above