Question

1 virus
2 Relative density
3 Night _ cd cell
4 Algae ​

Answer 1

Answer:

virus is a non living organism which has a protein coat called capsid it is non living outside the host

r d or relative density is also known as specific gravity and has no. unit

algae are found in ponds the green slime layer is present

they can do photosynthesis

they are kingdom plant

algae respires through fragmentation