Tamara normally feeds her cat canned cat food. she noticed that every time she uses her electric can opener, her cat comes to the kitchen. what is the conditioned stimulus?
a) the cat food
b) the sound of the electric can opener
c) the cat coming to the kitchen
d) tamara

Ihave made a dive then stayed on the surface for a while. after this surface interval my pressure group is k. what is the maximum amount of bottom time available when doing a repetitive to 17/56 feet

Rewrite the following sentences in active voice. caution: one sentence (only one) is written in active voice. do not rewrite it just label it as being active. 1). the use of copernicus's theory was forbidden by religious leaders until 1757. 2). i am puzzled by your question. 3). the girl is frightened by horror movies; she only watches chick-flicks. 4). radium and polonium were discovered by marie curie. 5. most of the town was destroyed by a tornado. 6). these flowers were planted by the 4-h club. 7). the little boy showed his mother the bruises, cuts. and bumps on his shin. 8). pluto was discovered by clyde william tombaugh in 1930 in flagstaff, arizona. 9). the painting was purchased by mr. jones. 10). the song was performed many times by kate smith. 11). england was ruled by a woman nicknamed "bloody mary" from 1553-1558. 12). the law of universal gravitation was discovered by sir isaac newton.

This is a major archaeological site that was once a regional center to the mayan empire in ancient mesoamerica.