How does fertilization occur?

when two cells, egg and sperm, join together and the resulting cell has a complete set of chromosomes

happens between to organisms in which one harms the other

the joining of egg and sperm together

when a cell multiplies in the body to create another

when plants and animals become part of the food chain

Which of the following would be a body response when stepping outside without a coat on a snowy day? a. senaceous glands. secrete more senum b. more liquid is transported by the body to the skin fir insulation c. blood vessels in the skin narrow and contract d. blood vessels in the skin expand

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots

Cpr, or cardiopulmonary resuscitation, is a first-aid technique to save lives. it involves compressions of the patient's chest cavity. which description is the best description of the functions of chest compressions in cpr? chest compressions are done to pump the heart. chest compressions are done to strengthen the rib bones. chest compressions increase carbon dioxide inhalation. chest compressions allow the patient's muscles to wake up.