4. The relationships a population has with others in its community are: a. Always harmful b. Always beneficial c. Neither harmful nor beneficial d. Sometimes harmful and sometimes beneficial

Sometimes harmful and sometimes beneficial

Explanation:

The relationship of people living in a particular society or community can neither be generalized as being beneficial, neither can it be generalized as being harmful.

Activities such as, planting of trees, cleaning sewage and refuse etc are beneficial to the community while activities such as cutting down of trees, burning of wood pose threats to the society.

Going by the above explanation, we cannot specifically say that the relationship is toxic or beneficial but instead, it is safe to say that it is sometimes beneficial and it is sometimes harmful.

balearic sea - is a body of water in the mediterranean sea around the balearic islands. baltic sea - is a mediterranean sea of the atlantic which is enclosed by scandinavian and baltic countries. barents sea - is a marginal sea in the artic ocean located off the northern coast of norway and russia.

giant impact theory - the moon was formed from the collision between earth and another mars-sized body.

colliding planetesimals hypothesis - the moon was formed from the same cloud of material as earth.

capture hypothesis - the moon was locked into orbit by earths gravity as it was passing by it.

accretion hypothesis - the moon was formed from collisions and combining of planetesimals.

i think this is right, if not and you know better let me know.