<span>When cells were first taken from Henrietta Lacks, she was suffering from cervix cancer. Henrietta Lacks was a woman whose cervix cancer cells were used as the source of the HeLa cell line nowadays used in medical research. During treatment for cervical cancer in 1951, the cells were taken without her knowledge. The cells were cultured by George Otto Gey who created the HeLa cell line.</span>
B
Plant's cuticle is an adaptation on land that prevents the evaporation of water from the plant.
Explanation:
The cuticle is made of lipid polymers impregnated with wax. A thick cuticle covers the epidermis of the leaves and prevents of some plants to prevent the loss of water from the leaves and plants via evaporation. This is especially a significant adaptation to desert plants that need to conserve water because they receive very little annual rainfall in their environment.
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For more on adaptation of desert plants check out;
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<span>Embalming is the art and science of preserving human remains by treating them to forestall decomposition. The intention is to keep them suitable for public display at a funeral, for religious reasons. It helps preserve the body for many years
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<u>Answer:</u>
<em>A constant is something whose value cannot be changed and is used for comparison purpose. </em>
<u>Explanation:</u>
The controlled variable is a type of variable whose value is kept constant during the experiment to get the desired or expected result. The difference between constant and a control variable is that the constant can never be changed.
However, the value of control variable can be changed but is kept constant with a purpose in an experiment to get the data. The controlled variable in a battery can be the multi meter that should be used for all the batteries.