1. There are tracks from three different animals in the rock. 2. One animal was chasing another animal.

3 . Two different animals died in this spot.

4. When the animals walked here the ground was wet.

5. One of the animals that died here had bony plates.

6. One of the animals that died here had sharp teeth.

7. The animal that had sharp teeth ate meat.
A. Observation

B. Inference

1.Observation

2. Inference

3. Observation

4. Inference

5. Observation

6. Observation

7. Inference.

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.