Bonjour, je suis en 4ème et je ne comprends pas les 3 questions : a, b et c. Merci d'avance, bonne journée.

What happens when a magniseum ion ia atracked to a chlrene ion

Which of the following best describes the relationship between glucose and complex molecules such as hormones?

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.