Which change of state occurs at 0 °C when heat energy has been added to ice?

A. boiling

B. melting

C. freezing

D. condensing

The liquid mercury in a thermometer expands as it is heated. This is a A. change of form. B. change of state. C. chemical change. D. physical change.

Which statement best summarizes Gregor Mendel's contribution to science? Mendel determined that garden pea plants can produce flowers in a variety of colors. Mendel found evidence that factors for some traits are inherited from parents.

Soil formation is dependent on a number of factors. t or f

What is required for reactants to form bonds?

Most natural food chains are only four or five links long, rarely more. the number of trophic levels is limited because

Fungi fall under the Plantae kingdom. True False

Which of the following is a compound? A) Sn B) Mg C) H D) CO study island

3) Amphibians hatch out of their eggs with: A lungs and develop gills later. B lungs and keep them their whole lives. C gills and develop lungs later. D All of the above.

Who discovered what in photosynthesis?

How does the water cycle play a role in the rock cycle?