Answer:
I'm pretty sure the answer is a Tundra.
Explanation:
It's the only biome that has snow out of every other answer choice. Snowy places are naturally cooler than humid ones.
Answer: Single cell organisms dont need a respiratory system because oxygen and carbon-dioxe diffuses between their body tissues and the enviorment.
Answer:
A cell wall is a structural layer surrounding
of plant cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mechanism
Radiocarbon is the most common.
Answer:
Species 28 and 14
Explanation:
Take the species that has the greater number, and the subtract it with the number of the other species. Then you would be able to see how many new species evolved between them.
