Laying the groundwork for the 'germ theory' of disease discovered that organisms cannot spontaneously arise, but must be introduced into an environment. A. Anthony Van Leeuwenhoek
B. Louis Pasteur
C. Robert Hooke
D. Ernst Ruska

Which of these statements is true about autotrophs, but not heterotrophs? a. they use sugar and oxygen to make carbon dioxide and water.b. they use chlorophyll and oxygen to make carbon dioxide and water.c. they use sunlight, water, and carbon dioxide to make sugars.d. they use sunlight, water, and oxygen to make chlorophyll.