3 and 4 are correct. A compound is a collection of two or more molecules, whereas a molecule is a collection of two or more atoms. 1 is not true because its talking about two atoms together which is a molecule. 2 is not true because it is still talking about two atoms which is still a molecule. 3 is true because molecule are subunits of compounds. 4 is true because elements and atoms are the same thing, and two or more atoms is a molecule.
Answer:
Phanerozoic Eon is divided into three eras on the basis of prevailing climatic conditions on earth and dominant life forms present during the time.
Explanation:
The Phanerozoic Eon is divided into three eras namely the Paleozoic, the Mesozoic, and the Cenozoic era. The basis for classification of the Phanerozoic eon into three eras are the prevailing climatic conditions on earth and dominant life forms present during the time. Changes in climatic conditions of earth altered the species composition and dominant life forms present in each era.
There are no options to select.
signs would include:
Cervix dilated at least 4 or 5 C
Contractions
Water breaking
Answer:
The correct answer would be Light independent reactions require the energy gathered in the thylakoids.
Photosynthesis can divided into two sub-processes or reactions:
Light-dependent reaction: It converts solar energy into chemical energy that is, ATP (adenosine triphosphate) and NADPH with the help of photolysisis of water. It takes place in thyllakoid membrane of the chloroplast.
Light-independent reaction: It fixes carbon obtained from carbon dioxide into the food or glucose with the help of enzyme RuBisCO (Ribulose-1,5-bisphosphate carboxylase/oxygenase).
It takes place in the stroma of the chloroplast and does not require the involvement of light however, it requires the products (ATP and NADPH) of the light reaction.
Fixation of 1 molecule of glucose requires 6 molecules of carbon dioxide, 9 molecules of ATP and 6 molecules of NADPH.
So, darkness indirectly affects the light-independent reaction.
Answer:
b. the ocean regulates climate
Explanation:
