Answer:
Biome 1: Arctic Tundra
Organism 1: Arctic Fox
Explanation:
1. This organism can be found in a cold, snowy ecosystem with long winters and short summers.
2. The Arctic Fox is at the top of the food chain, so it has a small amount of predators. It's population would increase if there were no predators to hunt them. This would affect the ecosystem by causing a sudden decrease in the Arctic Fox's prey.
The answer would be appropriately shaped receptors
Answer:
Pyramidal decussation is at the junction of medulla and spinal cord.
Explanation:
Pyramidal decussation may be defined as the the fibers that cross the corticospinal tract from one side to the junction and the other side to the central nervous system.
Pyramidal decussation is the point at the junction between spinal cord and medulla. The motor fibers crosses the midline from the medullary pyramids.
Answer:
In humans, genetic variations are caused because humans reproduce by a sexual life cycle which is termed as meiosis. In such a life cycle, the offspring receives half the chromosomes from the mother and half from the father. Crossing over and random assortment of chromosomes are two phenomenons which occur during meiosis. Due to these two phenomenons, genetic variations are caused.
During crossing over, the exchange of DNA segments between the homologous chromosomes takes place which brings about the genetic variations.
Monday 2pm, since it was forecasted to make landfall at that time
