Recessive alleles seem to vanish in some generations and reappear in later generations because: a. They cannot be expressed in males

b. They are masked by a dominant allele

c. They cannot be expressed in females

d. They cannot be expressed in successive generations

e. They are lost by mutation

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.

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.

instead of copying and pasting things off of tests or work done on computer which im sure you did, try and read over the question carefully