Which of the following best describes the theory of natural selection?
a the genetic make-up of a population gradually changes from one generation to the next.
b living organisms change over time.
c each species produces many more offspring than can survive long enough to reproduce. the offspring that do survive contain genes that are inherited from the parents.
d there is variation among the members of a species. some of this variation is genetically determined and so can be passed on to future generations.

Me with biology endocrine system crossword also image left i need with hw

Toorale man murder mystery < - your lab link 1. how was the toorale man found? 2. what did archaeologists learn about the burial? why is the burial important? 3. what information were the scientists able to learn from the skeleton itself? 4. why is the question of whether the injuries came from a stone or steel weapon important? how could scientists distinguish between the different types of weapons? 5. what did the carbon dating and soil testing tell scientists about toorale man? why are the dates interesting for scientists?

What organs comprise the respiratory system of a bird