Wegener was intrigued when the same ancient horse fossils showed up on different continents. what hypothesis did he propose to explain this? a. the fossils must be of different species b. the horses swam between the two continents c. the continents were at one time joined together d. the fossils were moved by humans

ANSWER:  C, the continents were at one time joined together.

REASONING: Alfred Wegener was the first person to propose the scientific theory of Continental Drift.  Continental Drift is a theory that supposes all the continents were at one time joined together as one large land mass.  The mechanisms of continental drift can be explained by Plate Tectonics.

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.

idk and i also need to know where are those bio brainy acts lol