During El Niño years, why is is Christchurch, New Zealand’s air temperature cooler than usual?

Claim 1
Christchurch’s air temperature changed because
the ocean current near Christchurch changed.

Claim 2
Christchurch’s air temperature changed because
the prevailing winds near the equator changed.

14) whenever diploid populations are in hardy-weinberg equilibrium at a particular locus a) the allele's frequency should not change from one generation to the next, but its representation in homozygous and heterozygous genotypes may change. b) natural selection, gene flow, and genetic drift are acting equally to change an allele's frequency. c) this means that, at this locus, two alleles are present in equal proportions. d) the population itself is not evolving, but individuals within the population may be evolving.

Which of the following would involve looking at different structures of organisms and comparing how similar they are? a. vestigial structuresb. radiometric datingc. homologous structures

What is the next step in muscle contraction after the actin changes shape