YALL- How did i leave my channel and i come back to check on it and i have 1k veiws- (btw i took a break cause i got some hate on discord for being a gacha)

Explain how organisms could be harmed by high levels of salt from roadways?

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

Why do some dna fragments move farther than others during gel electrophoresis? a. because their shapes are different b. because they are different types of molecules c. because the samples are different colors d. because their masses are different