Diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? check all that apply the shells make up the diatomaceous earth used in filters it can be used as an ingredient in abrasives they are used in food products the shells can be used in some insulating materials

Plz ! a frog has a genetic mutation in skin cells that causes part of its skin to turn orange the frog will not pass this genetic mutation onto its offspring because, a. the offspring will inherit skin cells from the other parent. b. mutated skin cells cannot divide and produce daughter skin cells. c. skin cells do not contribute genetic material to sex cells. d. parents do not contribute genetic material to their offspring.

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?

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