Organisms get the energy they need from food just like us humans do.
I believe it is behavioural isolation. When there are changes within a certain species, e.g. new birdcalls are formed in certain individuals in a species, "traditional" birds may not like such mating calls and only choose to mate with the more common birdcalls from majority of the birds. There are also some birds that may like the new birdcalls, and choose to mate with birds with those birdcalls. They become genetically isolated as they continue such behavior. Eventually, through genetic drift and other mutations, different species form from a single specie.
Hope this helps! :)
I think TRUE
Humans alteration of the global environment has triggered the sixth major extinction event in the history of life and caused widespread changes in the global distribution of organisms.
Density independent limiting factors
Answer:
They'll form a mesh that plugs what ever injury. The platelets can change its round shape to a spiny shape and will release substances that entrap more platelets. Proteins will enlargen and become a Blood Clot.
