Consider the biomass of the Jack pine trees in this pyramid. If the biomass of one Jack pine equals 12000 kg/m2/year, than what is the predicted biomass of the tertiary consumer level?

Which of the following scenarios is representative of commensalism? a. Tapeworms living in a mammal's intestinal tract b. Bees pollinating flowers c. Birds following grazing animals who stir up insects d. Clown fish living among sea anemones

Where is sperm first produced? Where do the sperm cells mature?

Where in the body does a mutation have to occur in order to cause an inherited change in the offspring?

What is it called when 1/2 of dna is new and 1/2 is old?

People with the genetic disorder Xeroderma pigmentosum a. have no direct DNA repair mechanisms. b. cannot repair UV induced DNA damage c. do not express mismatch repair proteins. d. fail to activate DNA strand break repair e.

What is the illness where you get: blurred vision, shaky hands, tired, weak, pale, blood glucose high, stomach ache, low insulin, low appetite, jaundice, no urobilin in urine, not urobilinogen, excess cortisol secretion, high level of bilirubin,

Which of the following is an accessory organ of the integumentary system? a. corium b. sebaceous gland c. thyroid gland d. epidermis

What can people do to stay safe before and during a rainstorm with high winds and heavy rains?

The female sex cells or eggs are produced by

List three solutions that scientists are suggesting to solve the problems caused by monoculture farming