Plasma from a sick mouse is filtered across a membrane that has a 200 nm pore size. if the filtrate is still infectious when injected into a healthy mouse, then the pathogen is most likely a(n):
-parasitic worm
-fungus
-virus
-bacterium
-archaean

Virus

Explanation:

Viruses are usually sized 5 - 300 nanometers, while other organisms are much bigger (bacteria 0.5 to 5 micrometers).

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation: