Which statement BEST describes an organ? O the process in which tissues combine
O the basic unit of all living things; a building block
Oa group of tissues joined together to perform a specific function
O the smallest unit in a system that can function on its own

Practice or pre-exercise theories of play pose the idea that a. play provides children with an opportunity to practice adult activities. b. play is necessary to reenergize human cognition. c. children have too much energy and play will rid them of that energy. d. children are the link between animals and human beings.

Does indrect sunlight does not pose any danger to the skin

The virus genome and viral proteins are assembled into virions (virus particles) during ) the lytic cycle and the lysogenic cycle in all known host organismsb) the lysogenic cycle onlyc) the lytic cycle onlyd) the lytic cycle in all host organisms but the lysogenic cycle only in bacteria