The outer cells of a blastocyst become the , an organ that offers protection and nourishment. once the blastocyst has implanted in the uterus, it is called an . after eight more weeks of development, it is called a .

Which flexible structure that supports the nerve cord and led to the backbone

Select the correct answer. which scenario describes unethical lab behavior? a. danny stores the chemicals required for his experiment in flasks and beakers. b. anna publishes the results of her experiment on the growth rate of saplings. c. jason repeatedly runs an experiment until he gets the results he desires. d. mia records her observations of an experiment precisely and accurately. resetnext

How do you know that the plant cells in these two images have different jobs, or functions? a. because all plant cells serve different functions b. because they are two different colors c. because their dna are different d. because their structures are different