What is unusual about the fossils in the burgess shale? they show the remains of mountain creatures. many were transitional fossils. they show that dinosaurs and humans lived at the same time. many preserved both hard and soft body parts.

The correct answer is the last one

Many Preserved both hard and soft body parts

chromosomes carry the genetic information for organisms. also, chromatin is the thread like dna which is located in the nucleus of an organism.

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.