(1)As a cloud of gas and dust collapses on itself and becomes more dense, the temperature at the center of the cloud

A, Increase
B, Decrease,
C, Stay the same.

(2)What is the first step in the nuclear fusion process?

A, two helium atoms combine to make one hydrogen atom
B, two hydrogen atoms combine to make one helium atom
C, two helium atoms combine to make one carbon atom

c

explanation:

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these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.

answer; ///stratum basale///stratum spinosumstratum granulosumstratum lucidumstratum corneum; 2,1,5,4,3