Which one of the following is true about antibiotics?
antibiotics are usually effective against viruses.
antimicrobial chemicals are never toxic to humans.
penicillin is an antibiotic produced by a fungus.
although there is some antibiotic resistance, it is not considered a serious
problem.

Hey me with this one❤☺❤ how do you say that a cell also has a life span and death like an organism? give one example.

As a result of wildfires, in grasslands. a) tree growth increases b) grass growth increases c) soil quality decreases d) invertebrate variety decreases

Directions: read the descriptions of the four islands presented in the lesson. 1. list two new traits that each new species of rat might demonstrate as it adapts to the conditions on each island. 2. introduce one of the four new rat species to another island and describe one challenge it would encounter and one success as it adapts to its new environment.