3. Would you say the Hocking River is a young, mature, or old stream? Why?

One group of reptiles, characterized by the fossil ark metal x

Which class of molecules contains the amino group, nh2 (a) sugars (b) water (c) proteins (d) hydrocarbons

One statements is an example of a scientific observation. another statement is an example of a scientific explanation. identify the correct statement for each category to illustrate how scientific explanations are inferred from scientific observations.