Week 4 homework questions
What are the distinguishing features of the Dungeness crab?
T/F the oyster drill is very similar to the dogwinkle, but it is an invasive species not
native to the pacific northwest
What is the difference between the checkered periwinkle and the sitka snail?
What two types of octopus are common in this environment
Why are seasquirts confused with sponges?
Why is rockweed so common?
What two algae have thin blades, this makes them easy to eat?
The seagrass beds of Posidonia oceanica in the Mediterranean are thought to be how old?
Does this mean that there are Posidonia oceanica plants that are actually thousands of
years old in your opinion? This is debatable, justify your answer.
Name three problems for marine organisms in Puget Sound that might be caused by
acidification of the seawater.
Why are there 1000 year old mudflat clam shells found 10 feet above the waterline near
Seattle, when the sea level hasn’t changed very much in the last 1000 years?
What evidence shows that there was a tsunami 1000 years ago in Seattle and then a
mudslide?
What environmental variable does a robomussel measure?
What counterintuitive finding did the robomussels show when comparing northern vs.
southern intertidal zones.
What are three things that mangroves do to act as “facilitators” to help other organisms.
Why are volunteers attaching oyster shells to screens and then sinking them into the
water in Georgia?
What are “reefballs” supposed to do?
Why is Connor Levy, born on May 18, different than other babies?
Assuming that you accept in vitro fertilization as being ethical, do you think that the
technique used with Connor Levy is okay?
Select the gender (male or female) of the baby?
Would be okay with you to select for probability of longer lifespan (2-3 year increase)?
Taller by 2 inches (increase from average 5’10” to 6’0”)?
Increased musculature and taller by 6 inches?
Extroverted personality?
More ideal facial shape and symmetry?