Develop a taxonomic key that a person could use to identify the following animals: hawk, alligator, duck, snake.

Why is a diverse a good word to use to describe protists?

Suppose you are searching for new life forms as part of an expedition in a remote region of Alaska. At one site you find 24 greenish-brown objects, each measuring around 1 ${cm}^{3}$. The objects do not appear to have heads, tails, or legs, but you suspect they Hay be alive. Describe what you would do to determine if the objects are alive.

X is the exponential (2) random variable and Z is the Bernoulli (1/2) random variable that is independent of X. Find the PDF of Y=ZX.

Two organisms that share several classification levels will be _________ and have __________ in common.

Pick an organism in your home and describe how this organism meets the four basic conditions for survival.

The two-part naming system called _____ was devised by Linnaeus in the 1700s.

Which could happen through convergent evolution? (a) two unrelated species could evolve into one species (b) two unrelated species could evolve similar features (c) two unrelated species could evolve very different features (d) two unrelated species could finish evolving

The scientific name for the red maple tree is Acer rubrum. Another organism is called Acer negundo. Based on its name, what can you predict about this organism? Explain

The mosquito Aedes aegypti is a carrier of the Zika virus. Aedes is the name of the mosquito's (a) order (b) gamily (c) genus (d) species

Many homeowners get their drinking water piped up from wells dug into their property. Sometime this well water smells bad because of trace quantities of the gaseous compound hydrogen sulfide, H2S. How might this odor be removed from water already taken from the tap?

The two-part naming system called ______ was devised by Linnaeus in the $1700s$.

A student is designing a controlled experiment to test whether the amount of water that a plant receives affects its growth. Which factors should the student hold constant and which variable should the student change?

A student is designing a controlled experiment to test whether the amount of water that a plant receive affects it's growth. Which variable should the student hold constant and which variable should the student manipulate