Answer:
the lowest the layer, the older the rock
Explanation:
If the rock is at the top, it is the youngest and if it is at the bottom, it is the oldest. This is what i remember from 6th grade, hope this kind of helps.
Answer:
Productivity within an ecosystem can be defined as the percentage of energy entering the ecosystem incorporated into biomass in a particular trophic level. Biomass is the total mass, in a unit area at the time of measurement, of living or previously living organisms within a trophic level.
HOPE THIS HELPED!!!!!!!!!!!XDDD
TRUE. Most drugs are eliminated by the kidneys in urine although some are excreted in saliva, sweat, or exhalation.
More similar because related organisms have the least amount of differences in their DNA during the pass of generations through inherited traits.