Ethylene, a hormone found in plants, is produced to ripen fruits. These fruits ripen and drop to the ground where they release seeds. Which two plant systems are interacting when this occurs?

As a result of wildfires, in grasslands. a) tree growth increases b) grass growth increases c) soil quality decreases d) invertebrate variety decreases

How have high taxes on tobacco products impacted the number of people who use them? a. the number of tobacco users has increased. b. the number of tobacco users has decreased. c. the number of tobacco users has not changed. d. the number of adolescent tobacco users decreased, while the number of adult users increased

Which locations on the map are low-pressure areas? a b c d e