For many of their illnesses scientist and doctors haven't treated them before so they don't know how to treat them or exactly if the animal can handle the treatment
Answer:
B. Weathering
Explanation:
Fire makes trees weather and die.
Answer:
Euglena are classified into the Kingdom Protista, and the Phylum Euglenophyta.
Explanation:
Answer: crossing over
during the process of fertilization, a sperm and egg join together to create a zygote. since a sperm had half the number of chromosomes and an egg has half the number of chromosomes, when they join together the zygote had a complete diploid set of chromosomes. the assortment of chromosomes and crossing over promotes genetic variation during the process of reproduction
