Human breast milk contains large quantities of secretory Ig A (sIgA).
Answer:
What are ethical and aesthetic services?-the nonmaterial benefits that humans receive from ecosystems
Answer:
because our solar-system's vantage point is inside one of the galaxy's spiral arms. When we observe the Milky Way, we usually are looking toward the center of the galaxy, about 25,000 light-years away.
Explanation:
5=noble gases
6= 6 valences( not entirely sure though)
sorry
Heterotrophs. They consume other living things for energy instead of creating their own. Also Pandas aren’t plants.