Answer:
A- consisted mainly of water, carbon dioxide, carbon monoxide, and methane
Explanation:
The option A, is attributed, as the composition of the secondary atmosphere, which was generated by gases trapped within the rocks that make up the planet, but escaped during volcanic activity.
Answer:
D. Adapt to environmental change
Explanation:
Organisms that cannot adapt to environmental change will die off. Our Earth is constantly changing. It is vital that organisms change with it.
Answer:
Chloroplasts
Explanation:
Chloroplasts are found in cells of leaves and green parts of the stem. They contain green pigment called chlorophyll which makes photosynthetic cells to appear green. They are sites of photosynthesis. Chlorophyll traps light energy from the sun. The energy is used to drive the manufacture of sugars from carbon dioxide and water, a process called photosynthesis.
The mechanism that is least likely to inactivate a tumor-suppressor gene is chemical modification.
Tumor suppressor genes, also abbreviated as TSG, are the ones that check the cell cycle and regulate them. They inhibit any damaged gene from moving ahead in the cell cycle. If the tumor suppressor genes are inactivated anyhow, it can lead to cancer.
Chemical modification is the process of chemically modifying the structure of a protein. It is a beneficial process when used efficiently as it help to derive the product of interest. Therefore this process is least likely to cause inactivation of tumor suppressor genes.
To know more about tumor suppressor genes, here
brainly.com/question/16188646
#SPJ4
