In general, when a substance changes from a solid to a liquid,
O A.
the density of the substance increases.
OB.
the substance no longer has density since density is a property only solids have.
OC.
the density of the substance remains the same.
OD. the density of the substance decreases.

What is the primary goal of human communities?

Imagine that certain laws of physics could be ignored and you were able to travel vast distances in moments. now imagine that you traveled to an earth-like planet located light-years away that is known to support life. think about what you’ve learned in this unit and make an argument for what you think would be the dominant type of life form on this planet. consider whether a notochord is required for an organism to manipulate its environment and become a dominant creature.

Draw the structure of dna nucleotide with adenine as nitrogenous base