Pls help me 1:__Cu20 + ___C ↠__Cu + ___CO2

2:___ Na + ___O2 ↠ ___ Na2O
3:___ C2H4 + ___ O2 → ___ CO2 + ___ H2O
4:___ C4H10O + ___ O2 ↠ ___ CO2 + ___ H2O

Pancreassalivary glandsliverlachrymal glandssweat glandoil glandsgoblet cells

This is s cute awee : (( . well if she's showing you signs that she may like you , then shoot your shot ! don't be afraid . & if you're unsure that she's giving you these signs , then wait out for a little bit . most girls are different . some may act really sweet , but only bc you're a good friend of hers . that , or she might like you . you just never know . but i think you should sit down with her & tell her how you feel . but don't be awkward & shy . just be straight up & tell her how you feel . if the feelings aren't mutual , then don't cry about it . you need to respect her decision & look for others in the world . feelings can be difficult & confusing , but don't be afraid to show them . i say you play it out & if you're still unsure about it , talk to her . - rach

B.) nitrogen fixationnitrogen fixation is the process of nitrogen molecules seeping into the soil and inside plant roots and bacteria. it gives more "life" to plants