Which gland is known as the "master gland" because it sends chemical messages to many other glands? thyroid gland
thymus gland
pineal gland
pituitary gland

Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers

2. how does the miller-urey experiment fall short of demonstrating that life can arise from inorganic molecules? explain. a. it doesn't show a leap between a collection of amino acids and a single-celled organism. b. it recreates the conditions that existed at the earth's beginning, but no molecules form as a result. c. it doesn't provide evidence of the formation of amino acids. d. it doesn't show how multicellular organisms developed from unicellular organisms

What is the difference between how ionic and covalent bonds form