The algae, walleye pollock, and orca populations could have all affected the moon jelly population. What additional
evidence do you need to determine which of these populations might have caused the size of the moon jelly population
to increase?

I'd need the data from the population sizes of the algae, walleye pollock, orca, ocean sunfish and sea turtles. And I'd also need water temperature data, levels of dissolved oxygen.

Explanation:

The jellyfish population may have increased because of an increase in phytoplankton. This leads to an increase in

zooplankton; a decrease in walleye pollock, leading to an increase in zooplankton; or an increase in orcas, leading to a

decrease in sea turtles. Sea turtles, being the main predator for keeping the jellyfish population in check.

Also, if there are more red algae, jellyfish polyps have less place to grow. Without it, the polyps can attach itself on every surface.

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

1. a tropical dry forest carries out more rapid nutrient cycling