D both a and c can be striated
Usually patient's with pica are missing a nutrient in their diet..blood testing is the usual method to discover what nutrients are missing.could also b due to a mental illness..
Insects have two pairs of wings, while bats and birds each have one pair. Insect wings lack bones, but birds and bat wings have them. Butterfly wings are covered in scales, bird wings in feathers , and bat wings with bare skin.
I hope you the answer will help you :)
Answer:
Option 4
Explanation:
Wool is not a good conductor of heat. It is rather a bad conductor of heat.
