Answer:
Capillaries pass oxygen and waste between blood and cells.
Explanation:
Answer:
V≈904.78cm³
Explanation:
The volume of a sphere with a diameter of 12 centimeters is 904.78cm³.
Formulas: V=4/3πr³ and d=2r
V=1/6πd³=1/6·π·12³≈904.77868cm³
Answer:
1. Fossil evidence
2. Homologous similarities.
3. Molecular evidence
Answer:
All of the choices are correct.
Explanation:
- When a substance emits light which is not a result of heat, then such a spontaneous emission fo light is known as luminescence.
- Several chemical reactions or electrical energy can lead to the production of luminescence by organisms.
- The enzyme that is responsible for the production of bioluminescence by the organism is luciferase and it is capable of producing luminescence by catalyzing oxido-reductive processes.
- Luminescence is also produced in bacteria, and it is often controlled by the process of quorum sensing.
The correct answer is they are produced by cyanobacteria.
Stromatolites are being produced by cyanobacteria.
Stromatolites are termed as layered mounds, which have columns and also sheet like rocks which are originally formed with growth of layers.
Lichen stromatolites is a type of stromatolite which is formed by layered structures rocks and they are formed above water.
