Answer:
d. no one knows for sure
Explanation:
The universe is infinitely big. It goes on forever and ever, so no one knows what's in it. We might find something really big, but we'll never know if there's something even bigger out there.
Animalia is the label that appears to differentiate animals from organisms on other kingdom.
Explanation:
Scientists uses the process called taxonomy to classify the organisms based on their structure, functions and relationship to other organisms.
Eukaryotes represents the domain of life. Domain Eukarya are classified into four kingdoms they are protista, fungi, plantae and animalia.
The kingdom protista represents the organisms that are simple structured and they swim through the water and obtain nutrients from the environment.
In the kingdom fungi like mushrooms absorb nutrients from the environment and they are heterotrophs.
In the plantae kingdom the organisms are plants and they are autotrophs. They prepare their own food.
In Animalia kingdom the organisms are animals and they are multicellular heterotrophs. They do not have cell walls and the reproduction is done sexually and some can reproduce asexual.
<span>Formation of bivalents lead to spindle fibers from opposite poles attaching to homologous chromosomes.
Hope this helps!!</span>
Answer:
Tundra
Explanation:
Ocean is the most stable biome, provides the majority of earths food and oxygen.
Rainforest provide 20% of earths food production. Also stable.
Grasslands although the don't get much rain it doesn't compare to the harsh weather that Tundra's face.
Tundra's is a very fragile environment. The freezing cold temperatures makes it a very difficult environment to survive in the winter, and plants and animals have a hard time coping with any extra stresses and disturbances. Therefore making it the least stable out of the rest listed.
The ability of an animal to maintain a stable internal environment is called homeostasis
