Answer:
Plants are made up of roots, stems, and leaves, and most produce flowers, fruit, and seeds. ... Using carbon dioxide, water, nutrients, and energy from sunlight, the chlorophyll makes the food that the plant needs. This process is called photosynthesis. During this process, plants release oxygen into the air. During the day, plants soak up sunlight during photosynthesis, the process they use to get energy. But when the sun goes down, plants' opportunity to eat disappears and other physiological processes take over, including energy metabolism and growth. Plants release oxygen during the day in the presence of natural light through the process of photosynthesis. While at night, the plants uptake oxygen and release carbon dioxide, which is called respiration.
Explanation:
It expanded slowly - False
It gradually warmed - False
Stars and galaxies formed - True
Atoms such as hydrogen and helium formed - True
It was no bigger than the head of a pin before it exploded - True
The first one is C. Varying in shapes of forelimbs
The second one is B. Enable members of a phylum to survive and reproduce.
The third one is B. Deuterostome development
All of the above points are valid for fossils' contributions in understanding the process of evolution. They allow us to study the ancestry, we can see the homologous organs or structures, if fossils are well-preserved; different fossils can lead us to follow the cycles of the changes that occurred during macroevolutions, and fossils can be used to study different populations which had different body structures for surviving in different environmental conditions.
<u>Answer</u>:
The mass of a star can be determined by studying binary star systems.
<u>Explanation</u>:
In this system it consists of two stars, revolving round the same bary-centre. The systems having two or may say more than two are called as the multiple star system. This zone is also a habitable zone, here the water exists in the liquid form. We could have sometime seen the two stars together. They are also very capable of strengthening the terrestrial planets inside the stable orbital ranges. They have generally two orbits like P-type as well as circumbinary.
