Answer:
C. But see the answer under C. Apparently C is the accepted answer.
Explanation:
A. Not A.I don't think that's a problem for gulls especially on beaches.
B. Not B. Their feather do not look like they need much help in keeping their feathers attached when in flight.
C. This is not really the answer, but it is the best answer of these 4. The actual answer is that the bones are porous for better air intake which provides more oxygen and hence they are better able to fly.
D. Not D. Food has nothing to do with the problem. Birds get an adequate amount of food without their wings being porous. See the answer for C.
Using numerous tissue cultures will facilitate individuals perceive however cancer works, however it spreads, however it is attacked and eventually overwhelmed. Scientists will experiment with them while not being afraid that one thing can happen to the patient since they would not be victimization actual cancer patients, however rather a bit of tissue in a very research lab.
The answer to this question would be: 2^23
When the gene is dividing, the chromosome pair, which was made by 2 single chromosome, will be divided into two single haploid chromosomes. That means there is two kind of possibilities for each chromosome. If there are 23 chromosomes then it will be 2^23 possibilities
Weathering because it's "wearing" down something to make sediment
Answer:
1. Life, exist 2. pre-existing cells.
Explanation: