Answer:
The reason hydrogen bonding occurs is because the electron is not shared evenly between a hydrogen atom and a negatively charged atom.
Explanation:
Hydrogen in a bond still only has one electron, while it takes two electrons for a stable electron pair. Any compound with polar covalent bonds has the potential to form hydrogen bonds.
R-selected species often experience EXPONENTIAL growth in population, giving a J-SHAPED curve on a graph.
R-selected species are those that have high growth rate. These species may produce many offspring but not all will survive into adulthood.
His Theory that all life is related in the present day species differ from ancestral species therefore an example can be back then there where two types of humming bird with short beaks dyed off because they couldn't reach the nectar from the flowers.
Hope this helps?
The answer is B because soil is not just to hold plants in the ground they support life such as worms
