I think it’s d.
search it up to make sure
Answer:
The first line of defence (or outside defence system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils.
Explanation:
C. since sexual reproduction takes a lot longer and it involves 2 offsprings. it requires more energy
Answer:
this might not be right I don't know much about earth science but I believe your answer is A) D)and possibly B)
Explanation:
I hope this is right!
