Some people have the ability to roll their tongue (rollers) while other people cannot roll their tongues (non-rollers) .An investigation was conducted to how many learners in Grade 10-12 could roll their tongues . formulate a hypothesis? please help ​

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

What evidence supports the law of conservation of energy? a) mechanical energy is converted to chemical energy during photosynthesis. b) oxygen is made from the breakdown of carbon dioxide during photosynthesis. c)energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis. d)the sun gives off light energy that is absorbed by plants.

Glycogen is an energy-storage molecule in humans. a hormone that is called insulin controls the storage of glycogen in the liver. insulin is made up of amino acids.