Answer:
1 pretty sure its A and 2 i think its B
Explanation:
<span>Zookeepers
have a difficulty of keeping koala bears alive because Koala bears are
susceptible to viral infections. There is a virus that is present to Koalas
which is called the Koala retrovirus. Koala retrovirus makes a Koala bear more
susceptible to infections and even cancer. </span>
Answer:
because genetic fusion is useful for adaptation in the environment
Genetic variation is thought to occur due to mutations, sexual testing, and small population size
Explanation:
Genetic variation is the variation that occurs in an organism, either on the basis of nucleotides, genes or chromosomes
sorry if this answer wrong
Answer:
definition: Biotic factors are the living components of an ecosystem.
example: animals, plants, trees, grass, bacteria, moss, or molds that you might find in an ecosystem.
