Raccoons eat a variety of foods and can live in a variety of habitats, including locations near humans. tiger salamanders eat an abundance of worms and insects and require wetland habitats so they do not dry out. what characteristics best identifies the two different species?

Raccoon is generalists but tiger salamander is specialists.

Explanation:

A generalist species can survive in a variety of different condition and on variety of resources, for example, an omnivorous animal can survive on both producers or by eating consumers but a carnivorous animal require only flesh to survive.

So here raccoons can eat variety of food and can survive in variety of habitat so it is a generalized species but tiger salamander is specialist animal as it require only worms and insect to survive and require a particular habitat to live. Therefore Raccoon is generalists but tiger salamander is specialists.

the endocrine system secretes hormones into blood and other body fluids. these chemicals are important for metabolism, growth, water and mineral balance, and the response to stress. hormones provide feedback to the brain to affect neural processing. reproductive hormones affect the development of the nervous system.

thinking it would be physical characteristics