Which term describes organ systems that work together and maintain steady internal conditions when external conditions change? a. tissues

b. neurons

c. cooperation

d. homeostasis

I believe it is D.

Explanation:

Homeostasis refers to the relatively stable state inside the body of an animal. Animal organs and organ systems constantly adjust to internal and external changes in order to maintain this steady state

many phylogenetic trees have a single lineage at the base representing a common ancestor. a lineage that evolved early from the root and remains unbranched is called basal taxon. when two lineages stem from the same branch point, they are called sister taxa.

can i get the brainliest pls

explanation: