The image shows one stage in human development Which stage of development is pictured
Fertilization
Blastocyst development.
Cell differentiation
Embryonic growth

How do you date a sample of rock that you suspect as being one of the earliest on earth

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a.one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b.one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c.one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.

Which of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs