Explain how photosynthesis illustrates these general principles. Energy is neither created nor destroyed in biological processes, but energy can be transformed from one type to another. During energy transfers and transformations, some of the input energy is transformed to heat energy.

How is the carbon cycle related to global warming ?

The basic types of tissue in the human body are

Embryonic stem cells are cells derived from an embryo. these cells can be used to create new tissues for patients suffering from certain illnesses and disorders. which statement best summarizes why the use of embryonic stem cells could be seen as unethical? a. some people consider embryos to possess rights equal to those of fully developed human beings. b. extracting stem cells from embryos is a very energy-intensive process, which consumes resources that could be used elsewhere. c. embryos are difficult to obtain, so the monetary cost of using them for research outweighs their benefit. d. the process of extracting stem cells from embryos generates biohazardous waste that cannot be safely disposed of.