Answer:
A. organ.. B. Species
Explanation:
1. parts that make up organism are called as organs
2. a group of similar organisms that can successfully interbreed called as species.
Density. Density is the measurement of how much matter is in a substance
Allan already had a heart attack and can try to prevent another one by changing the diet, exercising, or even quit smoking, but there are non-modifiable risks such as age, sex and generic heritage, so If Allan is over 40 years old, male or comes from a family with heart diseases, Allan needs to be extra careful because those factors cannot be changed no matter how the way of life is changed.
Sedimentary rocks form when sediments come together and forms the rocks, while metamorphic rock are those formed when sedimentary and igneous rocks compress under great heat and pressure.
