The oldest rocks on earth date from about 4.2 billion years ago. What does this suggest about the interval between 4.6 billion years ago, when the earth started to form, and 4.2 billion years ago ?

What is an endocrine function? (apex) a. esophageal glands release mucus into the esophagus b. salivary glands release saliva into mouth c. swear glands release sweat to the skin d. the pineal gland releases melatonin into the bloodstream

(99 points) be serious! how do farts work? how do you fart without it stinking? serious answers only

Anormal appearing couple is found to be heterozygous recessive for albinism both have the genotype aa the gene responsible for albinism is recessive to the normal pigment-producing gene what are the changes of their children being albino