Ques: You are presented with the question "What do male dogs use in urine to mark their territory?" and the following answer choices: - Natural aphrodisiacs - competing for resources - Tails - Urine cleaner - Something coming from a gland - Chemical energy - an area swollen with pus - Chew toys Now knowing that male dogs use pheromones in urine to mark their territory and pheromones are natural aphrodisiacs, choose the best answer.
Ans: Natural aphrodisiacs

Ques: You are presented with the question "What can help decrease emissions?" and the following answer choices: - power - exercise - Carpooling - Flying on airplanes - Having children - Eating red meat - green manures - electricity Now knowing that carpooling decreases the amount of cars used to travel to a place and cars and gasoline-burning engines are large sources of emissions, choose the best answer.
Ans: Carpooling

Ques: You are presented with the question "Of the following, which is most likely to cause disease?" and the following answer choices: - one celled organisms - influenza - Allergies - smallpox - antibiotic - bones - Anthrax bacteria - lungs Now knowing that pathogens can cause disease and anthrax is an example of a bacterial pathogen, choose the best answer.
Ans: Anthrax bacteria

Ques: You are presented with the question "What can environmental change affect?" and the following answer choices: - DNA damage and mutations - the life history of a species - Animal survival - organisms and their habitat - rivers and streams - global ecosystems - that material's properties - other living things Now knowing that seasons cause change to the environment and seasonal variations and random changes in the environment affect species' life histories and stocks, choose the best answer.
Ans:
the life history of a species