In mammals urine is expelled through the urethra which is part of the excretory system in unicellular organisms waste products are discharged directly through the surface of the cell
<span>There are different types of epithelium cells that make up the skin, the outermost layer consists of dead stratified squamous. The skin in your mouth and esophagus are also stratified squamous cells but these are not keratinized.</span>
I'd say Solar energy is a source we humans could use in the future
Answer: The scientific method is cyclic.
Explanation: Scientific methods is the systematic way of using knowledge , hypothesis , observation , theories and experiments , to give us understanding for the questions.
Scientific method is always cyclic as it involves several steps. Cyclic way give us better understanding about facts and whole phenomena.
Coral reefs provide an important ecosystem for life underwater, protect coastal areas by reducing the power of waves hitting the coast.
