(Ecology) Food Chain lab Gizmo: What is a major disturbance that the simulated ecosystem is able to recover completely from? Why is this considered a major disturbance? Why do you think the ecosystem is able to recover?

The intensity, or loudness, of a sound can be measured in decibels (db), according to the equation , where i is the intensity of a given sound and is the threshold of hearing intensity. what is the intensity, in decibels, [i(db)], when ? use a calculator. round to the nearest whole number. 8 9 19 80

Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer