Answer:
How about these?
... a challenging terrain
... logistical problems
... navigational challenges
Explanation:
Swim and move independently in water currents
Answer: Changes can result from new science observations, and you discover new things overtime, the more experiments we do, and the more data we collect, the better our scientific ideas become. Even when we have the right explanation, it takes time for those ideas to spread among scientists, and even longer for those ideas to spread among the public.
* Hopefully this helps:) Mark me the brainliest:)!!
B) study of psychological disorders.
Answer:
The tundra is the coldest of the biomes. It also receives low amounts of precipitation, making the tundra similar to a desert.
(Source: https://earthobservatory.nasa.gov/biome/biotundra.php)
