What are the functions of a contour feather?

Which of the following is not considered an appendage of the skin? nails glands follicles none of the above

45 points how are people today being protected from tsunamis? earthquake data is analyzed to detemrine if a tsunami is likely, and if so, warnings are sent out. areas in tsunami risk zones are no longer heavily populated. radar is used to measure wave heights regularly. meteorologists study the winds to determine if wave heights will be large.

What type of plant is good for a bioassay and where can i buy it? i only have a month.