When the condition is acidic the substance that would leached is d.aluminum which is then the most ample element in the earth. Aluminum becomes a big part of one's life. It can be use in one's daily life like a beer can, cables,etc.
Not very many, as most would get mauled and eaten by bears and other predators
Environmental laws help ensure the environment and the economy are equally protected and promoted, not just because we need them both, but because each needs the other.
A fixed allele is an allele that is the only variant that exists for that gene in all the population