How are infectious agents transmitted?

Anton created a chart listing different types of materials. which best complete the chart?

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion

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.