In 1869 Mendeleev put together the periodic table
I think it’s C or A I’m not sure
What ways do organisms interact?-competition, predation, cooperation, symbiosis
-Competition: between same and different kinds of organisms, competes for available resources (food, light)
-Predation: between different kinds of organisms, hunt and kills each other in order to supply their energy (shelter)
-Cooperation: between same organisms, lives together and helps each other out (mates)
-Symbiosis: between different kinds or organisms, lives in close association with another kin of organism (space/territory)
Answer:
Birds and Dinosaurs once shared a common ancestor.
Explanation:
A common ancestor is an organism in which two or more distinct species evolved from. Those species are related through similar body structures and behaviors.
If a solution has equal hydronium and hydroxide ions, the solution is considered neutral. A neutral pH is 7.
