"A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another. ... Food webs consist of many interconnected food chains and are more realistic representation of consumption relationships in ecosystems."
Table 1:
17 protons and 17 electrons
78 protons and 78 electrons
32 protons and 18 electrons
38 protons and 36 electrons
13 protons and 13 electrons
15 protons and 18 electrons
14 protons and 14 electrons
Table 2:
Ba2+ ion
Radon
Polonium
Tin
Selenium
Cesium
Magnesium Ion
IT WAS SUPER TOUGH!!!
Answer:
D. guard cells.. this is answer i think..