Answer:
Floating ribs
Explanation:
The thoracic cavity has 12 pairs of ribs evenly distributed on the left and the right sides of the cavity that function to provide surface area for muscle attachment such as the intercoatal muscles that assist in breathing. The ribs are flat shaped bones semi circular in shape attaching to the thoracic vertabrae with a wider. The first to the tenth ribs are linked to the sternum by a cartilage to assist in their epansion and relaxation during breathing. The 11th and 12th ribs have no cartilage that can attach them to the sternum and hence are called floating ribs.
Answer:
The correct option is D: Being prepared for harsh weather conditions
Explanation:
Plants are sensitive to the changes in the environment and any drastic changes in their surroundings can potentially cause the plant to go into stress, or possibly even die. Too high or low a temperature and the plant will not be able to cope. Similarly, drastic changes in water levels will really affect its health and growth.
Hope that answers the question, have a great day!
1. Large intestine
2. Minerals
Answer: RNA is a more stable molecule than DNA
Explanation: DNA (deoxyribonucleic acid) is much stable than RNA (ribonucleic acid) for many reasons; Frist of all its because of the double strand of the DNA versus the single-stranded RNA. This is thanks to the Hydrogen bonding between bases since those bondings release free energy that allows the molecule to be provided by more thermodynamic stability.
Also the lack of 2′ OH groups makes DNA more stable since the OH groups are very reactive by themselves. In the DNA sugar molecule there is not a spare OH group that could start reacting on its own. So this is why DNA is immune to chemical reactions, while RNA (having an extra OH group) is more chemically "promiscuous".
