how do the hypothesis of microspheres and the rna world hypothesis build off of each other?
a. microspheres were important for storing and releasing energy for surrounding organisms that contained rna.
b. nonorganic molecules self-replicated within the early microspheres, similar to the way cells divide.
c. replicating rna molecules transformed into dna within the microspheres.
d. when microspheres split, the genetic coding in self-replicating rna would pass to the newly formed microsphere.

Arrange these elements of the intrinsic conduction system in the order that a depolarizing impulse travels during a normal heartbeat. rank from first to last. do not overlap any tiles. view available hint(s) reset av nodeav bundleinternodal pathwaysbundle branchessa nodepurkinje fibers

Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers

Populations of blue-winged warblers, a type of bird, migrate south in the winter and return to canadian breeding grounds in the spring. as global temperatures have increased due to climate change, spring has started arriving in the warbler's breeding grounds earlier in the year, before the warblers return. warblers now arrive at their breeding grounds too late to select ideal nesting sites and to feed on important early-spring food sources how are populations of blue-winged warblers most likely to be affected by the earlier arrival of spring? o a. populations will go extinct since the warblers will stop migrating to breeding grounds. b. populations will be unaffected since most species can quickly adapt to effects of climate change. c. populations will increase since warmer temperatures are generally beneficial to survival, d. populations will decline since individuals will be less likely to successfully reproduce, reset next