Nitrogen fixation is carried out mainly by... 1. Humans
2. Animals
3.Bacteria
4.Plants

Which two factors contributed to creating a global culture? the creation of the united nations improvement in telecommunications health issues such as the ebola virus increased opportunities for global travel

What is the average speed of a car that traveled 300.0 miles in 5.5 hours

Explain why ecosystem diversity results in species diversity in a healthy biosphere