oxygen
There have been no known robots on Venus. Due to the extreme environment on the planet, such as high temperatures and pressure, it is difficult to send robots there.
It is difficult because Venus has a thick atmosphere of methane. The atmosphere is so thick when a NASA probe tried to enter the thick atmosphere it crumbled to piece's. So that's why its hard.
In aerobic respiration glucose is broken down to release energy and the only toxic products formed are carbon dioxide CO2 and apart from that excess water and it is not difficult to get rid of these things.This is called excretion (removal of toxic waste products of metabolism.)
Antarctica has no ants because it is a cold and desolate place.
hersh environment mean difficult to live ir survive in.
Creating plasma in a ladle is challenging because the ladle is typically made of materials that cannot withstand the high temperatures required to generate plasma. Additionally, the controlled environment needed to sustain plasma is difficult to achieve in a ladle which is typically an open container. Plasma requires specific conditions, such as high temperatures and a gas or vacuum environment, which are not typically present in a ladle.
Mycolic acid helps these cells survive desiccation and makes them difficult to stain. Organisms with mycolic acid are acid fast.
Extremely difficult to live at this temperature.
The Andes is a harsh environment due to its high elevation, rugged terrain, severe weather conditions, and limited access to resources such as water and food. The altitude can cause altitude sickness, the terrain makes transportation difficult, and the weather can be extreme with cold temperatures and sudden weather changes.
Environment and weather.
It might be difficult for nations in this region to balance economic growth with environmental concerns because of the environment in the region.
Living in the tundra is difficult due to extreme cold temperatures, limited food sources, short growing seasons, and isolation from urban amenities. The harsh climate and limited resources present challenges for survival and make it tough for humans to thrive in such a harsh environment.