How 3 of limber pines physical characteristics can be a result of the abiotic conditions in an alpine region?? characteristics:
•small & scrubby
•short twisted limbs
•silver grey bark become rough & black at maturity
•grows where it’s cold, windy and dry

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

Which of the following statements about archaea and bacteria is true? a. neither is single-celled. b. they both have nuclear membranes. c. neither reproduces by binary fission. d. they both lack a nuclear membrane.