As in the case of unlike magnetic poles, unlike electric charges a. attract each other. b. repel each other. c. exist in pairs. d. do not interact.

In an ecosystem with four levels-producers, primary consumers, and two higher-level consumers-describe where the decomposers operate relative to the other trophic levels. Provide at least two examples of organisms at each level.

What effect does turbidity have on an aquatic system?

What does an epidermis look like

compare natural selection and artificial selection. in which of these processes do humans play a role?

Why it is useful to be able to rapidly make many copies of a piece of DNA using PCR? Select all that apply. Check All That Apply The genes in transgenic organisms are created by PCR; they do not exist in nature.

What is the name of a complex group of organisms that are connected and interact with one another?

Oceanic crust is composed mainly of basalt. continental crust is composed mainly of granite. why does oceanic crust generally tend to subduct under continental crust when plates collide

What is placebo and why is it used in some experiments

What is organ? a. group of different types of tissue that work together to perform a specific function or related functions. b. group of cells that work together to perform a similar function. c.

The temperate phage lambda can undergo two life cycles depending on the environmental cues. During which cycle does phage lambda form a prophage? Choose one: A. lysogeny B. burst cycle C. lytic cycle D. slow-release cycle