Answer:
A 0.4 g/cm³
Explanation:
The density of a substance, which is a cube in this case, can be calculated by using the formula:
Density = mass/volume
Where;
Density = g/cm³
Mass = grams
Volume = cm³
In this question, each side of the cube measures 3 cm. This means that the volume of the cube can be got by multiplying 3 × 3 × 3 = 27cm³. Hence, volume of the cube = 27cm³.
Mass of the cube = 12g
Density = 12/27
Density = 0.4444
Approximately, density = 0.4 g/cm³
1 to 2 to 4 in 30 mins !!
so every 15 min they becomes twice !!
eqn is : 2^n bacteria = 15n mins
so the final eqn for 120 mins is x= 2^8 bacterias = 256 !!
Answer:
Modern continents hold clues to their distant past. Evidence from fossils, glaciers, and complementary coastlines helps reveal how the plates once fit together.
This distribution of fossils led to theories that the southern continents were once joined in a supercontinent called Gondwana.
Fossils tell us when and where plants and animals once existed. Some life "rode" on diverging plates, became isolated, and evolved into new species. Other life dispersed to new areas as continents reconnected, oceans narrowed, or chains of volcanic islands formed. Finding identical or similar fossils in areas separated by vast distances were some of the first clues that scientists used to reconstruct past plate movement. This distribution of fossils led to theories that the southern continents were once joined in a supercontinent called Gondwana.
Prokaryotes divide by a process called binary fission.
Mouth or nose. Then goes into your trachea and into your lungs