What is the most useful technique for dating earth materials and coming up with a quantitative age for earth

1. some of the fossils that have been found from before the cambrian explosion are embryos this suggests that the organisms these fossils belong to a. have bilateral symmetry b. reproduce asexually c. exhibit cephalization d. reproduce sexually 2.

What are 2 examples of abiotic factors and 2 examples of biotic factors?

What first spurred research into what has now become green building?

What is a good flexibility test for a 13 year old girl?

Which is NOT an example of conduction? A. hot tea warming the cup it is in B. blowing on the hot tea to cool it off C. burning your tongue on the hot tea

Arrange the tiles to show the sequence of the steps in a scientific investigation. make an observation ask questions construct a hypothesis test the hypothesis analyze the results and make conclusions communicate the result

Sharpei dogs have wrinkled skin that they never fully grow into. The extra skin is produced because their DNA codes for an extra switch of the HAS2 protein.

Leon has a big football game this evening. What monomer should he load up on during dinner to ensure that he has enough energy for the big game? Fatty acids Amino acids Nucleotides Monosaccharides

What's the most likely cause of genetic variation (that causes cancer) ?

Describe the physical properties of the cell membrane.