Advanced medical equipment can first view a baby's heartbeat near the end of which stage? zygote
blastocyst
embryo
fetus

The mammal pictured below is a silvery mole rat. which statement is an inference based on the picture? the animal is ugly. the animal has hairless feet with sharp claws. the animal has prominent upper and lower incisor teeth. the animal likely has poor vision since its eyes are so small.

The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird

Which of the following would you not find in a bacterial cell? dna cell membrane golgi apparatus ribosomes