Question 7 of 10 multiple choice: select the best answer and click "submit." many ocean creatures make their shells out of calcium carbonate (caco3). this process is more difficult when the ocean ph is lower. why would greenhouse gas emissions harm these creatures? a. the concentration of salt in the water has decreased. b. calcium carbonate is a major greenhouse gas. c. the polar ice caps are made of freshwater. d. co2 acts as an acid when absorbed by the ocean.

The images show the wings of a bat and a bee. from this evidence, what can you conclude about the evolutionary relationship between these organisms? a. the wing structures of the bat and the bee are different, indicating they didn’t inherit wings from a common ancestor. b. the wing structures of the bat and the bee are different, indicating they inherited wings from a common ancestor. c. the functions of bat wings and bee wings are the same, indicating they obtained wings from a common ancestor. d. the functions of bat wings and bee wings are different, indicating they didn’t obtain wings from a common ancestor.

The picture showed normal blood cells which are around and sickle cells which appear much longer people with sickle-cell suffer from the sickle cell anemia which is inherited diseaseit is caused by a change in gene responsible for production of hemo goblin this type of change is known as an

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.