Project work: Collect information about the experiments of Joseph Priestly. Write a two page report describing Priestly’s experiments proving that oxygen is needed for burning. ` (AS_(3))`

Collect information about experiments of Joseph Priestly and Ingen Houz from Internet and make a brief note on them.

Describe an experiment conducted by Joseph Priestly which revealed the essential role of air in the growth of green plants.

Read the following information and answer the given questions. To understand the functional relationship between these phases of cell cycle Dr.N.Rao and his research associate Dr.Johnson conducted experiments on cell fusion technique.His researches revealed that the cell cycle is sequential ,unidirectional had controlled by a series of chemical signals.His experiments are considered to be a milestone in the cell cycle studies.This study threw a new hope of ray for the budding scientists to carry out reseraches on cell division. G_+1:3.5 hrs,M:1 hr are the stages in a cell cycle which occur in a manner with specific time. G_1,S,G_2 stages are collectively called……………?