An energy-rich organic compound needed by organisms is

(1) water

(2) salt

(3) oxygen

(4) glucose

How come DNA be used to solve a crime?

Which organ controls the pituitary gland by producing chemicals that either stimulate or suppress hormone secretions by the pituitary gland?

An asteroid is a celestial body. A large number of asteroids form a doughnut-shaped ring in space called the main asteroid belt. Which planets' orbits is the belt located between?

In humans, XO individuals are females with Turner syndrome and XXY individuals are males with Klinefelter syndrome. Red green color blindness is caused by an X-linked recessive allele.

what evidence is there to show that changing sand to glass is a chemical change

Why do scientist publish their work

In pea plants, the allele for purple flowers (p) is dominant to the allele for white flowers (p). in a cross between a purple-flowered plant and a white-flowered plant, all 73 of the offspring plants had purple flowers.

1. The first choice on a dichotomous key is: "1A. Are wings covered by an exoskeleton? vs. 1B. Are wings not covered by an exoskeleton?" Which organism is separated from the others by this question?

b. Explaining A friend claims that pea plant grow faster than corn plants. Could you investigate this idea through scientific inquiry? Explain.

Why is a disease like osteoarthritis not considered an infectious disease?