The four main categories of large biological molecules present in living systems are

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?

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

What changes the stability of the element