Answer:
The average American family uses more than 300 gallons of water per day at home. Roughly 70 percent of this use occurs indoors.
Explanation:
Answer:
It prevents harmful substances from entering a cell.
Explanation:
Crossover occurs when two chromosomes, normally two homologous instances of the same chromosome, break and then reconnect but to the different end piece. If they break at the same place or locus in the sequence of base pairs, the result is an exchange of genes, called genetic recombination.
