Answer:
matter
Explanation:
"In thermodynamics, a closed system can exchange energy (as heat or work) but not matter, with its surroundings"
Answer:
plant cell
Explanation:
1.cell well-protected and provides structural support of cell
2.cell membrane regulates entries and entries of substances within the cell.
3.nucleus stores DNA
4.plastids they store starch help in photosynthesis
5.chloroplast pigment which protect cell
6.vacuole sustain turgid pressure against cell wall
7.mitochrondria provide energy to help break carbs
8.lysosome help with cellular waste disposal
Food takes about 6 to 8 hours to completely pass through the digestive tract.
