The weak bonds are called hydrogen bonds and they are used to connect the hydrogen atom to oxygen atom in order to share electrons.
2 is crescent and 4 is gibbous
Biotic factors of an ecosystem are all the living organisms that affect other organisms in an ecosystem and include animals, plants, microorganisms, dead organisms, and even animal waste. Example of biotic factors include: Grass as producers (autotrophs).
Atomic number <span>increases by exactly one from element to element hope this helps you<3</span>
