Llama or goat
Typically in American English the statement would be "a cow is a useful animal" - the first sound in useful is close enough to a consonant that most individuals will use "a" rather than "an".
a long tongue
which adaption would be most useful to an animal that eats nectar from plants
you would use miles.
The color of the organism's eyes would likely be the least useful piece of information for classifying it as an animal. Characteristics such as body structure, presence of a backbone, method of reproduction, and diet are more relevant in determining classification within the animal kingdom.
In artic regions such as Antarctica then the animal with white fur will be harder for a predator to catch as they will blend right in with the snow and ice, as an animal with dark fur like black fur for instance would stand out in the snow and would be spotted immeadeatly.
It depends on what you need the animal for. You can ride both, and you can get milk from both, and you can show both, however, horses are better for riding and cows are better for milking and while you could ride a cow, it is definitely not a good animal to ride, unless you are into buckin' bulls. So, if you want milk/beef, a cow would be more useful. If you want an animal to ride and to compete on, a horse would be more useful.
Animals that are not adapted to the extreme conditions of the Karakoram, such as high altitudes, harsh winters, and limited vegetation, would struggle to survive there. For example, tropical species like monkeys or reptiles that require warm climates and abundant food sources would not thrive in the cold, rugged terrain of the Karakoram. Additionally, animals that lack adaptations for dealing with snow and ice, such as heavy fur or specialized feeding habits, would also be ill-suited for this environment.
They would use bottled air.
I would probably say dog. Because dogs help people when their blind and their man's best friend!
The "Roshyferlyll" feature
A candle at high altitudes would burn dimmer compared to the same candle at low altitudes. This is because the oxygen concentration is lower at higher altitudes, which affects the combustion process and results in a less efficient flame. Additionally, the reduced air pressure can lead to a weaker draft, further diminishing the candle's brightness.