Engineers are developing hydrogen fuel cells as an alternative to energy from fossil fuels. Which two statements are benefits of using fuel cell electric vehicles over conventional combustion engine vehicles?​

Abiologist counts the number of rabbits in a population each year and observes a decrease in population. since the coyote population has exploded, the biologist concludes that the coyote population has had a negative interaction with the rabbit population. which describes the biologist’s actions? a.) experimentationb.) inferencec.) observationd.) interacting