Are low gears are used to overcome gravity while driving uphill and downhill

When you are going uphill, force of gravity is working against us to slow us down and while going downhill gravity it will cause us to go faster. In both cases we have to use the low gears to maintain the speed, this is how counteract the effect of gravity and use of low gears while going downhill and uphill.

"griffith's experiment discovering the "transforming principle" in pneumococcus bacteria. griffith's experiment, reported in 1928 by frederick griffith, was the first experiment suggesting that bacteria are capable of transferring genetic information through a process known as transformation." - griffith's experiment.

the major parts of the digestive system:

salivary glands.

pharynx.

esophagus.

stomach.

small intestine.

large intestine.

rectum.

accessory digestive organs: liver, gallbladder, pancreas.