An early winter frost preventing further growth in a tomato garden is an example of

a.

carrying capacity.

b.

a limiting factor.

c.

a biotic factor.

d.

indirect observation

Part a - blue-light photoreceptors and phototropism complete the flowchart to identify the process by which blue-light photoreceptors and auxin control phototropism in plants. drag the labels to their appropriate locations on the flowchart.

Why do we never see the dark side of the moon? A. Synchronous Rotation B. Over the millennia, the moon has become "locked" into a special kind of motion around the earth. C. The moon rotates on its axis at the same pace as it revolves around earth.

Which way is not a viable means for an invasive species to enter a foreign aquatic ecosystem? A) by fish restocking B) by releasing aquarium fish into the ocean C) by releasing your pet alligator D) by giving your pet snake to a wildlife park E)

Ventilation perfusion coupling means that more blood flows past functional alveoli than past nonfunctional alveoli. true or false

A mite is a tiny organism that may "ride" on top of an insect such as beetle in order to move quickly from place to place. This relationship between the mite and the beetle would be an example of parasitism if

What of the following is a characteristic of lactid acid fermentation

Linnaeus' smallest category in his classification system was the: domain species kingdom phylum

According to the gate control theory of pain, how do gate neurons inhibit pain neurons? select one: a. by releasing endorphins b. by activating specialized end bulbs c. by blocking basket cells d. by releasing substance p

Sharks and dolphins look very much alike--both have streamlined bodies, fins, and sharp teeth. Sharks and dolphins, however, are not closely related. The body structures that characterize sharks and dolphins have evolved independently.

Which arachnid appendages are actually poisonous fangs used to paralyze prey? A. chelicerae B. tracheae C. pedipalps D. chelipeds