Hey, how are you doing?
The answer to your question would be:

i believe.
Hope this helps, and if you need further help, contact me!
Thank you,
Darian D.
B oxygen because they need it to survive
The answer is d. <span>animals with transmissible diseases separated from healthy animals.
An isolation ward is a separate ward used to isolate animals (or people) suffering from some transmissible diseases in order to reduce a</span><span> risk of passing a potential infection on to others.</span>
Answer - C. The time required for the Succession to Occur
Reasoning - Behind my answer is because the time the succession evolves and grows to build life and progress to improve and expand in each certain time period.
D.mitochondria because animal cells also contain mitochondria