Answer:
Primary productivity in an ecosystem is important because it lays the foundation of the food chains and food webs being observed in an ecosystem. It is the initial and main source through which energy is added into the food chains and food webs in an ecosystem. The organisms in which primary productivity occurs bring energy for the different organisms living in an ecosystem. Without them, energy will not be able to flow through an ecosystem as there will be no energy produced.
Topographic
Map is known as elevation and land features
It might affect it's medical history because you could accidentally out the wrong disease in and will be medicated wrong
Vertebrates are animals that have a backbone or spinal column, also called vertebrae. These animals include fish, birds, mammals.
Explanation:
the function of the human immune system is to defend the body from invading pathogens...
