A group of tissues working together is an organ.
ANSWER:
A. an organ
Its A because dolphins like to fallow boats not to be scared
<span>Chlorophyll is the pigment that is involved in photosynthesis. Please give me the Brainliest answer. Thank you. </span>
In secondary succession, the pioneer species are plants that are adapted to exploit disturbances rather than bare rock. They typically include plants such as grasses, birch trees, and fireweed. Organic matter from the pioneer species improves the soil so other trees and plants can move into the area.
