Which gas is being used from the atmosphere during photosynthesis? A. carbon dioxide
b. hydrogen
C. Nitrogen
D. oxygen

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

Explain why autonomous underwater explorers (aue) will provide entirely new kinds of information about ocean processes

1. mendel observed that pea plants had traits, such as color, that were either “one or the other,” never something in between. discuss the correlation between mendel’s factors, what they might be, and why pea plant traits come in one form or another—e. g., gray or dark red—rather than blended.