How do tortoises differ among the galapagos islands? what causes these differences?

Why is carbon the backbone of liveing things

What methods do scientists use to predict volcanic eruptions? select all that apply

Ascientist observes certain changes in the physical features of a particular species over time. she concludes that the species has undergone evolutionary change. she wants to study the animals by analyzing their population. she’ll use . the population of this species is decreasing considerably. if this trend doesn’t change, this species will fall under the category of animals. this is a plato question,i need to make up his biology credit.