Living systems are made of complex molecules including carbohydrates fats proteins and nuclei caucused. even though there are more than 100 elements known to exist, these molecules are comprised of only a few elements what are these elements? a. sodium potassium calcium nitrogen phosphorus sulfur b. carbon hydrogen oxygen nitrogen sulfur and phosphorus c. carbon hydrogen oxygen fluorine chlorine iodine d. fluorine chlorine iodine nitrogen phosphorus sulfur

Which process of living things produces water that enters the water cycle

Aparent with freckles is crossed with a parent without freckles. the punnett square shows the possible genotypes and phenotypes of the offspring. which statement accurately describes the probability of phenotypes? a. the offspring are more likely to have freckles. b. the offspring are more likely to have no freckles. c. the likelihood of the offspring having freckles and not having freckles is the same. d. the likelihood of the offspring having freckles and not having freckles cannot be determined.

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.