Amarine biologist wants to investigate the effect of ocean tides on certain aquatic ecosystems. can this be studied by the scientific method?

What came first egg or chicken? and is tomato a vegetable or a fruit?

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

Substances that can pass through cell membranes by diffusion include a. na ions. b. proteins c. glucose. d. oxygen.