Virus are small infectious particles which act as intracellular parasites. They are considered non-living when they are present outside their host because they show no metabolism outside.

They do not have even cellular level of organization and are basically just packages of nucleic acid and protein. Still, virus have some important features which are common with cell-based life like the presence of nucleic acid as their genetic material.

Apart from the presence of genetic material they also have the ability to evolve like the cell-based life. This evolution allows them to be selected naturally and produce more offspring.

6 0

3 years ago

Only the water of marine ecosystems contains dissolved salt.

nata0808 [166]

Answer:This is false.

Explanation: Dissolved Salt can be found in a variety of water and marine ecosystems.

5 0

4 years ago

A tendon is placed under 1000N of tensile force and withstands tensile stress of

MissTica

Tendon 0.00000004 that is the right one Pa tendon strain 0,004 placed

3 0