Answer:
D
Explanation:
Gene pool is the total genetic diversity within a population or species
Answer:
1. boarder collie
2. newfoundland
3. bassit hound
4. german shepard
5. dashound
DO NOT USE THESE AS ANSWERS IF IT IS FOR SOMETHING IMPORTANT!!!!! THESE ARE JUST MY GUESSES
Explanation:
The answer is<span> the tetrahedron.</span>
I believe the answer is <span>D. Examining the different layers of heart tissue</span>
1. Living and non living things in an ecosystem are called biotic and abiotic factors respectively.
Living things include: plants, animals, microorganisms and non-living things include: sunlight, temperature, gases, water etc.
2. Ecosystem, population, biosphere, community.