Antigens are found on cancer cells and the cells of transplanted organs, and cancer cells are a type of malignant cell. Given these facts, what can be found on malignant cells among the following options: - bacteria - weapons - bones - fever - the Sun - acetic acid - antigens - parasites
antigens

Animals can communicate with sounds, chemicals, or visual cues, and unlike animal communication, properly human communication is abstract and linguistic in nature. Given these facts, how do humans communicate among the following options: - simply - electrically - sensory neurons - by indirect light - firm hugs - smell - linguistically - touch
linguistically

Using cell phones can cause people to become distracted, and distractions of any kind are dangerous. Given these facts, using cell phones can cause people to become what among the following options: - inactive - Allergies - dangerous - deadly - Dehydration - threatened - a pathogens - imbalanced
dangerous

Many corals secrete an exoskeleton that builds up to become a coral reef, and an insect has a hard outer covering called an exoskeleton. Given these facts, many corals secrete what to form a coral reef among the following options: - Chlorophyll - salt and water. - The area was once underwater - Chemical energy - aqueous solution - Organic compounds - gastropod shells - hard outer covering
hard outer covering