Which of the following statements is not true about saturated fats?
a) they contain many carbon-carbon double bonds
b) they are usually solid at room temperature
c) they are usually obtained from animal sources
d) they contain more energy per gram than do unsaturated fats
e) they are not desirable as part of a low cholesterol diet

A. They contain many carbon-carbon double bonds.

Explanation:

Saturated fats do not contain double bonds between the carbons. The carbons attached only by single bonds all saturated with hydrogen atoms or in other words, they have many hydrogen atoms clinging to the main skeletal carbon chain, and thus the word saturated.

Saturated fats are the type of fats that are not healthy.  

- decrease the number of plants and animals living in the water.

explanation: no but i do not usually comment