Which scientist calculated amounts of nitrogenous bases in DNA? a. Watson
b. Crick
C. Franklin
d. Chargaff

Which is it a characteristic of the animal kingdom? a. they include both vertebrates and invertebrates b. their skin is covered with hair or fur c. they are heterotrophs d. they are eukaryotic

In which terrestrial biome can you find trees that produce cones instead of flowers and needles instead of leaves? have trees that produce cones instead of flowers and needles instead of leaves. the latitudes in this biome have evenly distributed precipitation throughout the year. is it high or low

The transport tubes for food coming down the plants are called?