A tree falls and is covered in mud. Over time, the wood rots away and minerals seep into where the wood once was. The tree now seems like it is made of rock.
A. Amber
B. Mold
C. Cast
D. Imprint
E. Petrified

Explain how fossils scientists make discoveries about the lives of organisms and about how environments have changed over time. plz hurry up it time

How many autosomes are in this human karyotype? how many sex chromosomes?

Molecules like glucose and amino acids are not lipid soluble, so cannot cross the cell membrane by simple diffusion. instead, they are shuttled across by carrier proteins in the membrane from high to low concentration. does this process require energy from the cell? this is an example of what type of molecular movement?