Non-native plants, pests, and diseases are often introduced to the U. S from around the world. these invaders have the power to cause damage to an area and to a specific species living in the area . the Chesapeake bay is no stranger to foreign invaders. which non-native species is the greatest threat to the salt marsh habitat causing significant erosion?
A) Nutria
B) Phragmites
C) Zebra Mussels
D) Chinese Mitten Crab

Listen base your answer to the question on the information below.propane is a fuel that is sold in rigid, pressurized cylinders. most of the propane in a cylinder is liquid, with gas in the space above the liquid level. when propane is released from the cylinder, the propane leaves the cylinder as a gas. propane gas is used as a fuel by mixing it with oxygen in the air and igniting the mixture, as represented by the balanced equation below.c3h8(g) + 5o2(g) → 3co2(g) + 4h2o() + 2219.2 kja small amount of methanethiol, which has a distinct odor, is added to the propane to consumers detect a propane leak. in methanethiol, the odor is caused by the thiol functional group (–sh). methanethiol, ch3sh, has a structure that is very similar to the structure of methanol.what is the correct structural formula for a molecule of methanethiol