Which statement BEST explains why viruses can only reproduce within a host? O Viruses lack the organelles necessary to reproduce
O Viruses lack the genes necessary for transcription.
Viruses need the host cell to break down their cell membranes.
O Viruses need the host to provide nutrients.

What is called the "building block" of life?

1) strawberry plants typically reproduce by making runners, which are miniature versions of themselves, that grow off of the roots and stems of the parent. this type of vegetative reproduction is known as a) pollination. b) fragmentation. c) binary fission. d) vegetative propogation.

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.