Synovial joints can be classified based on the shape of the bone ends that make up the joints for example a joint consist of two flat or nearly flat bone ends that can slide over each other

the way that the mass of carbon can be conserved through cellular respiration is through a process/law called the law of conservation of mass which even tho it undergoes a process, mass is not be destroyed or changed

it should be d) transitional fossils.

they show the gradualism of evolution throughout a period of time

the correct answer is anaphylaxis.

anaphylaxis is a condition caused by insect bites, foods, medications, manifested by tongue swelling, shortness of breath, vomiting, low blood pressure. it sometimes may occur without an obvious reason. it is treated with epinephrine injection.other tretments include antihistamines and steroids,