Which of the following best describes the effects of water pollution on aquatic ecosystems?
a. it can result in fish kills and restrictions on human consumption.
b. it can change the physiology of fish.
c. it can cause long-term alterations of aquatic ecosystems.
d. all of the above select the best answer from the choices provided a b c d

Which of the following is the best example of positive peer pressure? a) your friend says “no ” to the dinner your dad cooked and prefers to hang out with friends instead b) your teammates keep making fun of you for spending so much time studying for friday’s math test c) your coworkers spend every weekend watching movies at tim’s house and invite you to join them d) your friends all sign up for a free class at the gym and suggest you sign up for it, too. brainliest to first correct answer.