Refer to the diagram to complete the sentence with the correct numbers.
When hydrogen shares electrons with oxygen, the
outermost shell of the hydrogen atoms are full with
electrons and oxygen's valence shell is full
with
electrons. Because the valence shells
of these atoms are full, the atoms are stable.
:H

Refer to the diagram to complete the sentence with the correct numbers.

When hydrogen shares electrons with oxygen, the outermost shell of the hydrogen atoms are full with 2

electrons and oxygen’s valence shell is full with 8

electrons. Because the valence shells of these atoms are full, the atoms are stable.

Explanation:

Edge 2021

parasites can detrimentally affect their host, but also must not allow their host to die before they can complete their life cycle. some parasites have complex life cycles with many different hosts, and have had to find ways of persisting in many different environments during the change from one host to another. ectoparasites live outside the body of the host, and can more easily  disperse, but are  more exposed to predators, parasites, parasitoids. endoparasites live inside the body of the host, and are therefore protected from the outside environment. but they can be  attacked by the host's immune system. they have therefore developed  mechanisms for dispersal such as  complex life cycles.