Which two animals are able to generate internal heat to maintain their body temperature in a cold environment? parrot
snake
frog
dog
crocodile
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dog and parrot

Explanation:

Because they are warm blooded animals there for they are able to generate internal heat letting them maintain a constant temp no matter the temperature  in their surroundings

organisms that are both used in toothpaste as well as cause malaria are protista and monera.

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.