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?​

What is an endocrine function? (apex) a.esophageal glands release mucus into the esophagus b.salivary glands release saliva into mouth c.swear glands release sweat to the skin d.the pineal gland releases melatonin into the bloodstream

Which hormone is used by both males and female?

What type of reaction is photosynthesis