Ascience class is checking to see how much life exists in local streams. one of the students records that 20 amoeba were found in the first sample of water. what is the student doing apex?

the student is doing Collecting data

Explanation:

Collecting data for a distinct plan from numerous roots, including surveys, observation, surviving reports. The method of collecting and holding data on variables of concern, in a founded orderly way that permits one to solve inquiries, test assumptions, and estimate results.

Data gathering should be managed at interludes. Quantitative Data type of data trades with items that are proscribed and can be revealed in numbers or symbols. Regularly displayed in the statistical form and can express the volume, length, span, cost, value, and so on.

Here student is collecting data from his research.

the earth’s crust is broken into separate pieces called tectonic plates (fig. 7.14). recall that the crust is the solid, rocky, outer shell of the planet. it is composed of two distinctly different types of material: the less-dense continental crust and the more-dense oceanic crust. both types of crust rest atop solid, upper mantle material. the upper mantle, in turn, floats on a denser layer of lower mantle that is much like thick molten tar.

each tectonic plate is free-floating and can move independently. earthquakes and volcanoes are the direct result of the movement of tectonic plates at fault lines. the term fault is used to describe the boundary between tectonic plates. most of the earthquakes and volcanoes around the pacific ocean basin—a pattern known as the “ring of fire”—are due to the movement of tectonic plates in this region. other observable results of short-term plate movement include the gradual widening of the great rift lakes in eastern africa and the rising of the himalayan mountain range. the motion of plates can be described in four general patterns:

collision: when two continental plates are shoved together

subduction: when one plate plunges beneath another (fig. 7.15)

spreading: when two plates are pushed apart (fig. 7.15)

transform faulting: when two plates slide past each other (fig. 7.15)

sumerians were polytheistic, meaning they believed in many different gods. so, the best answer is c.