Let the no of months be x
the equation will be-
42+x=3(8+x)
42+x=24+3x
2x=18
x=9
after 9 months Tom will be thrice his dog's age
Plant roots that grow in cracks can cause weathering.
Valleys formed by weathering or erosion can be canyons or ravines.
D. changes in temperature trends.
There are four major layers, all separated by temperature. Increasing or decreasing temperature of the gases in the layers keeps them separated.
The best option is <em>B,</em> A neighbourhood there had been built over a toxic dump.
<h2>Explanation:</h2>
Due to the heavy rainstorms and seeping of chemical wastes, there was declared an emergency on public health in 1978. The principle purpose behind this worry is on account of there are a considerable measure of dangerous squandered covered underneath the dirt of the Niagara Falls' Love Canal. The compound organization presently known as Occidental Petroleum covered 22,000 tons of dangerous waste nearby had.