Answer:
The sun is important for many reasons. Even though its far away, it keeps us warm, and gives us light. Plants also need the light to survive, and we need plants to breathe and to eat. We also need the sun because it makes sure the earth goes were its supposed to in space
Explanation:
Answer:C,D,E
Explanation:I did the USA test prep
B. by the sharing of electrons
Answer choices A and C are incorrect because covalent bonds form as a result of electrons (protons are kind of irrelevant). Answer choice D is incorrect because it describes an ionic bond.
Further study topics: water polarity, hydrogen bonds, free radicals, valence electrons, and more!
A. metallic
I gotta use 20 characters so ignore this bucko
Answer:
Input is oxygen and output is carbondioxide or the movement.
Explanation:
These two systems i. e. scuba diver and scuba gear interacting with each other by giving oxygen to the individual and remove carbondioxide gas from the diver. The input of this system is oxygen that is required by the diver while the output is the carbondioxide gas produced by the diver or the movement of the diver. This scuba gear is responsible for the removal of carbondioxide gas from the system. This scuba gear enable us to stay in deep water for 60 minutes.
