Which describes a similarity between abiotic and biotic factors? They may include things that were once living. They are both necessary for organisms to survive. They are not usually important parts of the environment They can be easily replaced if they are used or destroyed

#2

Explanation:

They are both necessary for organisms to survive

 B-They are both necessary for organisms to survive.

Explanation:

the  seven  days  battles  were  a series of seven battles over seven  days from june 25 to july 1, 1862, near richmond, virginia,  during  the american civil war. the  seven  days ended with mcclellan's army in relative safety next to the james river, having suffered almost 16,000 casualtiesduring  the retreat.

america