Answer:
O N C H
Explanation:
Oxygen has more valence electrons present in its outermost shell which is why it is the most electrovalent.
Nitrogen follows suit too while the remaining aren’t electronegative but electropositive
Answer:
B
Explanation:
It is believed that the carbon stored in ancient dead plants is what makes up fossil fuels.
The development of cell theory serves to show the rigorous activities that must be accomplished before a theory can be developed. A scientific theory is a tested and acceptable explanation for a particular observation. A scientific theory usually started as an observation. The observation is use to formulate an hypothesis which is then tested by carrying out an appropriate experiment. If the experiment confirms the hypothesis to be true, then other scientists from different parts of the world will carry out their own experiments in order to confirm the result of the experiment.
When the result of the experiment has been tested continuously for a long time and find to be true, then it becomes a theory. This is the chains of activities which the observations made in cells undergo before it becomes cell theory.
Answer:
True
Explanation:
Glomerular filtrate or nephric filtrate is a fluid which filters through the glomerulus of the nephron. Glomerular filtrate is same as blood plasma without the proteins. Since glomerular filtrate contains glucose, amino acids, and various salts which are not the part of the urine, are need to be reabsorbed into the bloodstream through the tubules of the nephron. Reabsorption of glucose 100%, amino acid 100% and sodium 70% take place in the proximal convoluted tubule.
The immune system
The immune system, made up of white blood cells, is ready at all times to defend out body against any form of bacteria, virus, infection, etc.