Which is the simplest level of organization in a human being? a) cells b) organs c) tissues eliminate d) organ systems

Answer: Cell

Explanation:

The simplest organization level in all the living organisms including humans is a cell.

All human beings are made up of a cell which forms the lowest level of the organization after which the hierarachy of the organization is as follows :

cells> tissues>organs> organ systems

Therefore, the simplest level of organization in human beings is a cell.

the answer is b: 1.4 km/hr

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.