An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a species living outside its native distributional range, but which has arrived there by human activity, directly or indirectly, and either deliberately
The failure of homologous chromosomes to separate properly is during meiosis where mutation appear
<span>A drumlin differs from a roche moutonnee, in that it is a depositional smooth val shaped small hill up to 1.5 km long and 60 mm tall, having a steep end and a sloping end (elongated in the direction ice flowed). Roche Moutonee is an erosional landform formed when a glacier moving over the top of the rock moves one side giving it a jagged edge and abrading the other side giving it a smooth edge.</span>
The answer would be: cell wall, a large central vacuole, and plastids such as chloroplasts.
Hope this helps.