It's some change in the conditions around the organism, which the organism can detect and respond to. A change in temperature, more light, or something physically poking the organism are examples.
answer:
it took 17,000 years for CO2 to go from 200 to 300 ppm.
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Gymnosperms do not have fruits or flowers and have an unenclosed or naked seeds on the surface of scales or leaves while Angiosperms have seeds that are enclosed within an ovary which is usually a fruit.
Answer:
Robert Hooke discovered the microscope I'm not sure about the others
1. Which structure of the excretory system in humans is responsible for converting ammonia into urea? - Liver is responsible for converting ammonia into urea.
2. Breathing in humans is driven by all of the following except
B. Air Pressure.
Hope I helped. Have a wonderful day.
