Suppose a single bacterium is placed on an agar plate and the number of bacteria in the population doubles every 30 minutes how long do you think it will take before there would be a thousand bacteria

Which of the following is a testable hypotheses?

Which type of stimulus do mechanoreceptors detect? sound pain heat light

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