The fossils of a few organisms are shown below. the first image is a bird, the second image is a dinosaur, and the third image is an archaeopteryx. the dinosaur fossils were obtained from the lower sedimentary layer, and archaeopteryx was found above it. the fossils of the bird were found on the topmost layer, which suggests that they’re the . this information also suggests that archaeopteryx .

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

2b2t

explanation:

2b2t

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.

5.6⋅10−^19  j

do you need the explaination?