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The following combinations of drug and their mechanism of action is correct: (1)1.        Guaifenesin                           – stimulation of β2 receptor causing bronchodilation2.        Acetylcysteine                       – mast cell stabilization3.        Budesonide                           – leukotriene modulators4.        Theophylline                         – non-selective β2 receptor stimulation causing bronchodilation 5.        Xylometazoline                     – Vasoconstriction of the mucosal blood vessels, reducing oedema of the nasal mucosa

A ___________ volcano is generally 1000-10,000 meters tall, has gradual slopes, is 300,000-1.5 million years old and is composed of layers of basaltic lava.

This is a highly threatened biome found around the equator, warm year-round, abundant rainfall, productive and biodiverse , multi-layered habitats with tall trees

Converting a prairie to a farm field is an example of________.

Why does global climate change matter. There are multiple right answers. Please pick all that apply for full credit.

Exotic species can  become invasive in their new habitat, because of absence of their predators.  They can threaten the native species by competing for their resources, being predators, or bringing disease.

_______________ happens when nutrient runoff causing microorganisms (esp. algae) to grow in excess and deplete oxygen for other living things

What would happen to the pH of a strong acid if you added a weak base to it? [answer1] What would happen to the pH of weak acid if you added a strong base to it? [answer2] What would happen to the pH of a strong acid if you added strong base? [answer3] 

Which of the following are the 3 important buffer systems in the human body?

Which of the following biomes is characterized by year-round consistent precipitation, deciduous trees, rich soil, and warm summer?