He found a nuclear structure (cells) in plants by looking through a microscope
Answer:
Changes in the environment may leave individuals less well adapted to compete successfully for resources such as food, water and mates. Sometimes an entire species may become unable to compete successfully and reproduce. These problems can lead to extinction.
Because carry out all the functions in the human body necessary for living. Proteins make up hormones that are required for living. Insulin - responsible for stabilising blood sugar. Haemoglobin - responsible for carrying oxygen around the body. Melatonin - responsible for helping us get to sleep. Adrenalin - responsible for the flight-fight-freeze response. There are many more but here are just a few.
Giant squid can be found In the North Atlantic ocean.
They're a few ways someone could receive color blindness for one color blindness could be inherited from your parents, and two could also be caused by "abnormal photopigments" which is down in the cells/genes and if deflects will most likely cause color blindness.
Hope this helps.