What is weathering and runoff?

Many birth-control pills release a constant amount of synthetic estradiols and progesterone for 21 days. true or false

In science class maria observed a white color and cut flowers she sees that the petals turn red when the flowers sitting in a vase that has red colored water she forms a hypothesis that the color reaches the flower through the stem what should we do to confirm the hypothesis

Peat deposits are found in waterlogged places where dead plant material piles up. when peat is buried, it undergoes compaction. it is subjected to heat and pressure for a long time, and a lot of water is squeezed out during this process. nearly ten vertical feet of original peat material becomes one vertical foot of coal. which of these remains unchanged in the system during the conversion of peat to coal? a) area b) density c) mass d) volume