The main reason would be evolution. A nocturnal animal has developed over time to see better in the dark, camouflage into the darkness, and it most likely relies on scent more than sight. A diurnal animal would mainly rely on sight and smell almost equally, and have a pelt that can blend in with it's surroundings. The ranges also depend on the animal's habitat, whether its carnivorous, omnivorous, or herbivorous. Carnivores mainly rely on scent, omnivores seem to rely equally, and herbivores most likely rely on scent. Chances are, late humans did have stronger senses, but as we evolved past needing to scent predators and prey, we rely more on sight and only really use scent to recognise certain things. Humans aren't in as much danger as other animals anymore, for the most part.
Answer:
Apparently, cold conditions.
Explanation:
I was curious so I went and googled it and found the following: "Sperm thrive in lower temperatures. Ideally, they should only be exposed to 4° F below body temp (roughly 94°) or cooler. This means that even small sources of heat can start to add up and damage your sperm count." Quick google search would do you the same but for the sake of it, the answer is cold conditions
The rotation of Earths axis and the tides of the ocean are what cause the daily cycles of our World.
they are skeptical and are not open minded to new ideas
Answer:
In gram-negative bacteria, the thin layer of peptidoglycan is surrounded by an outer membrane made of phospholipids, lipopolysaccharides, and proteins. This statement accurately describes specific bacterial cell walls.
Explanation:
The Gram- negative bacteria constitute of an outer membrane which is richly made up of lipopolysaccharides, phopholipids and proteins. The lipopolysaccharides function mainly as a virulence factor and are involved in causing variety of diseases in animals.
Gram- negative bacteria can be seperated from gram- positive bacteria mainly because of the thickness of peptidoglycan and by the presence of the outer membrane of Gram- negative bacteria. The outer membrane is absent in Gram- positive bacteria.