However i did not pass the test. fix the sentence by adding a comma.

What do all organisms need to survive? A energy B blood C carbon dioxide D soil

What chance does Irene have of being a carrier? Express your answer in a percentage.

Stem cells that will form b cells or nk cells are found only in the

Identify the compounds below that cannot be made via a direct friedel-crafts alkylation but can be made via acylation followed by a clemmensen reduction (to avoid carbocation rearrangements). select all that apply.

Which structure is lined with simple squamous epithelium? which structure is lined with simple squamous epithelium? oropharynx nasopharynx trachea alveolus?

Fernando has a difficult time due to procrastinating. why should fernando avoid procrastination?

How do humans get the nitrogen that they need?

What circumstances are best for fossils to form? Select all that apply. Rapid burial absence or limited oxygen supply undistrubed by geological forces involve heat and pressure

What type of geological activity is common close to oceanic trenches where subduction is taking place.?

What is the term for the procedure in which a woman's ova are removed from her ovaries and a man's sperm are used to fertilize the ova in a laboratory?