It is maybe or maybe it isn't
The correct answer is: marsupials.
Marsupials are actually defined by their ability to hold the young in the pouches, where they can be well protected. Some examples are Kangaroos and Koalas.
Other answers are wrong: for example, gymnosperms are plants, not animals.
Answer:
b) natural variation w/in a species
Explanation:
All the answer you put are evidence of evolution also I have done this before.
The lithosphere is different than the hydrosphere in that the lithosphere refers to the part of the Earth that consists of the rocks, the surface, the upper mantle and the depth of the plates; whereas, the hydrosphere, from the word hydro- which means "water", this comprises the 71% of the Earth's surface which is covered with water.
Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption. They also contain lots of mitochondria , which release energy from glucose during respiration in order to provide the energy needed for active transport.
Hope this helps, have a nice day!:)