Emily enjoys experimenting with color changing lizards. she places a green lizard on a brown background and a brown lizard on a green background. emily knows the green lizard should turn brown and the brown lizard should turn green. neither lizard changes color. which is what may have caused emily's results? a. other factors may be affecting the color change like fear or temperature. b. the lizards had to choose to move to the new background for the effect to take place. c. more time should be allotted to allow for the color change to take place. d. the backgrounds may have been the wrong shade of color for these specific lizards.

There are only about 250,000 known fossil species. true or false

Ineed with a hypothesis my question is can seeds sprout in different locations?

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.