The bones of this pterosaur were studied for carbon-14 levels was 1/4 the original amount. if carbon-14 has a half life of 10,000 years, how old are these specimen?

An animal cell (left) and a plant cell (right) are shown. which organelle, labeled x in the diagram, is found in both plant and animal cells?

Consider the venn diagram of plant reproduction. where in this image, areas a - d, would you insert the picture of the orange lily?

The lake of the ozarks is a human-made lake, so it collects runoff from coal strip-mining, fertilizers, resort wastewaters, and septic drainages. the average lake temperature is between 10∘c and 21∘c. consider the physical requirements for growth and multiplication that would allow fecal coliforms to “blossom” in the lake of the ozarks. which of the following would accurately describe these organisms? check all that apply. psychrophiles facultative halophiles extremophiles mesophiles hyperthermophiles