Answer:
1. a
2. b
Explanation:
I'm sorry I know only these 2 :)
Answer: Yes
Environmental problems like pollution has a solution. To curb this, measures must be put in place in making sure waste management agencies are establish. The work of these agencies will be handling wastes and disposing them at the best strategic places apportioned for this very purpose which will be in the outskirt of residential areas to avoid inhaling of toxins that emanates from these rubbish.
The mesenteric veins and the hepatic portal vein
The first mutation is substitution and the second is deletion
