True or false: vitamin b12 can build up in your system and cause damage.

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

The table below shows the number of foot bones in some horse fossils.horse fossil recordhorse fossil number of foot bonesp 19q 17r 24s 13ancient horses had more bones in their foot then present-day horses. the present-day horse has 11 foot bones. what is the correct order of evolution of the horse starting from the youngest fossil? a. q p r s b. s r p q c. s q p r d. r p q s