Investigations never involve hypothesis.

comparative
descriptive
experimental

Descriptive

Explanation:

A descriptive investigation can be define as the scientific process which does involves a claim or question but it does not involve a hypothesis. In this the observations are recorded, here no variables are manipulated, also there is no comparison between the variables takes place.

- both b and d.

-since b and d are the closest coastlines then that makes it the most affected.

< 3

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.