Q: Which group of organisms can show significant trait changes in the shortest period of time?
A: bacteria

Q: Which of the following describes a reason why companies irradiate some fruits and vegetables before they are sold to the public?
A: to extend the shelf life by killing existing microorganisms

Q: Use the information below to answer the question. Each organism on Earth is a part of a complex relationship with other organisms. This relationship is called a food web. The following organisms are part of a food web typically located in and around a reservoir. algae fish rabbit eagle pine tree grass field mouse Which member of the food web is a carnivore?
A: eagle

Q: Which factors can have the greatest effect on the health of a river system?
A:
nitrate levels and turbidity