Someone help plz both questions

Witch type of microscope is used to view very small cell components like proteins and dna?

How does an angiosperm prevent self pollination

What's wrong with this ecological pyramid? (multiple choice)1. secondary consumers should be at the bottom of the pyramid2. the sun has an arrow leading to decomposers 3. primary consumers should come after the sun4. energy retained should increase from the bottom to the top5. the sun should be at the bottom of the pyramid