In light of the pandemic we are living through, do you think vaccinations should be mandatory?

Place the steps tor the formation of the enzyme pepsinogen in correct order

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called

Which member of the following food chain will be least affected by ddt, a pesticide water pollutant, if bio-magnification is occurring? algae> zooplankton> crayfish> leopard frog> large mouth bass