Someone please help :) I would really appreciate it

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?

You and a group of friends are spending your vacation hiking through the mountains. it is cold in the mountains. you will be expending a lot of energy while hiking and you will need plenty of energy to keep you warm. you should pack foods high in to provide the most energy or kilocalories per gram of food. a) carbohydrates b) lipids (fats) c) proteins d) sugars

Mutations can be categorized based on the kind of effect they have on an organism