It measures the relative amount of hydrogen and hydroxyl ions in water. It’s important, because it’s an indicator that is changing chemicals of water.
Genetics, nutrition, fitness, sleep etc.
Answer:
Ponds are shallower than lakes.
Explanation:
Lakes take up larger areas than ponds and are also much deeper.
Ponds are generally smaller and shallower than lakes.
Answer:
B
Explanation:
a vestigial structure is something that was needed before but is not needed now but remains due to evolution
