The continental plate is thicker and less dense while the oceanic plate is thinner and more dense.
Given: The population density of frogs in a portion of a pond is 12 frogs per square meter. The size of the entire pond is 370 square meters.
To find: The total population size of the frogs in the pond.
Method: Using unitary method of proportions
Solution:
Let p be the density of the frogs present per square meter.
Let A denote the total area of the pond.
∴ p = 12 frogs/m² and A = 370 m²
The total number of frogs in the pond is given by,
Therefore, there are 4440 frogs in the pond.
Excretion is the only effective way invertebrates fight disease. Because they don't have an immune system working daily, invertebrates only have the capacity to excrete and cleanse their body of harmful materials.
Fermentation if oxygen is not present
In general, more complex animals are More likely to likely have a digestive tract than to have a gastrovascular cavity
Since it is really unlikely to have a set of digestive system if you are only a single cell organism