Weather conditions all over the world during an el niño year is unusual. many rain clouds forms over this warm part of the pacific ocean, bringing more than usual in north and south america. meanwhile, other parts of the world suffer severe
a) rain; drought
b) cyclones; tropical storms
c) rain; drops in temperature
d) days without precipitation; flooding

What are the types of mutations, and how does each alter the encoded protein? college level answer

Which organisms have pharyngeal arches that develop from all three germ layers and go through the same development stages as embryos? 1.bird 2.ladybug 3.starfish 4.snake

Examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. polyploidy is creating new species. the two populations are not interbreeding freely. hybrid offspring of the two populations begin to appear. one species will increase into a population size twice as large as the other species.