Answer:
That would be an isotope. An very common example is Carbon-14. Hope this helps.
Answer:
Third one down
Explanation:
RR is heterozygous dominant and Rr is heterozygous recessive
The three major types of pollution are air pollution, water pollution, and land pollution. Sometimes, air pollution is visible. A person can see dark smoke pour from the exhaust pipes of large trucks or factories, for example. More often, however, air pollution is invisible.
