Which organisms externally digest dead organic matter and then absorb the nutrients? a. autotrophs b. detritivores c. heterotrophs d. saprotrophs (total 1 mark) 2. what are the two components of an ecosystem? a. community and abiotic environment b. species and habitat c. habitat and abiotic environment d. species and community?

Red flowered snapdragons are crossed with white flowered snapdragons, producing all pink snapdragons in the f1 generation. what would you expect if you crossed pink with pink? 3/4, 1/4, 1/2 red, 3/4,/1/2,/1/4 pink,1/2, 3/4, 1/4 white

Select the correct answer. tay-sachs disease is caused by a mutation in the hexa gene located on chromosome 15. tay-sachs follows an autosomal recessive pattern of inheritance. with the of the diagram, identify which of the offspring will be an unaffected carrier. a diagram showing the genes of parents who are carriers of tay-sachs disease a. a, b, and c b. b and c c. a and d d. a e. d

Which of the following are responsible for sending messages from the hypothalamus to the thalamus?