1 Common triggers of an anaphylactic reaction include drugs, such as penicillin, insect stings, foods (peanuts, shellfish), X-ray dye, and latex. 2  The symptoms of anaphylaxis may vary and can include hives, tongue swelling, vomiting, and even shock.  If someone is at risk, avoidance is the best form of treatment.
Ocean regions with high concentrations of phytoplankton will have shades of blue-green depending upon the type and density of the phytoplankton population there. The basic principle behind the remote sensing of ocean color from space is that the more phytoplankton is in the water, the greener it is.
Lake color can tell you many things about the water body (e.g., including nutrient load, algal growth, and water quality) and also about the surrounding landscape. There are three main categories of lake color: blue water lakes, green water lakes and brown water lakes. Lake color and clarity can measured using a Secchi disk or underwater light sensors such as a LiCor PAR sensor. The color of lakes provides important information on water quality.