Mice became two species because of the geographic separation caused by river as they could not swim and move to both parts. This caused them to adapt and reproduce in the habitat of either side of the river whereas birds did not face any geographical isolation because they could fly over the river and live and reproduce like before.
Explanation:
Evolution of a species of a population into two different species is termed as speciation.
Speciation occurs due to the reproductive isolation of the organisms in the population due to change in habitat, reproductive cylcle, mating approach or sometimes change in genetic makeup of organs.
In the case of mice which inhabited the field but when the river was cut in between they could not go from one part of the field to other by crossing the river. They adapted to the part of fields they were in and mated to produce progeny with the phenotype required to adapt the habitat.
They became two species due to geographic separation and will be called as allopatric speciation.
While the birds nesting in the field were able to cross the river by flying over it their movement was not hindered by the river hence they mated and produced as before and did not evolve in two species.
To help reduce amount of CO2 emissions you could start by:
Walking or cycling to near distances instead of driving. It could be a win-win, you saving money on gas and helping the planet. By walking it'll help us stay active especially for lazy people "me." Recyling and reusing house hold items is another stradegy. Throwing any cans, news papers, plastic bottles, or cardboard objects into a recyling bin will help by reducing the amount of garbage getting tossed in waste lands.
Well the elements would be for weather climate is how hot or cold the atmosphere is, how many degrees above below freezing. But, for element of weather on a mountain top would be.."Humidity" is defined as how much water vapor is in the air. The state in which water is a gas is defined as "water vapor." Humidity is used to predict the chances of precipitation, dew or fog in the atmosphere. It is also Full Answer
The temperature element is the numerical measure of air in the atmosphere. Temperature is found using a thermometer and can be in Fahrenheit or Celsius. The temperature of the air has an effect on the rate of evaporation in the atmosphere, the amount of humidity and what form precipitation is in. Any state of water that falls from the sky is defined as "precipitation." This can be rain, sleet, snow or hail.
Answer:
gastropods aka snails and slugs include olfactory organs, eyes, statocysts and mechanoreceptors they use two pairs of tentacles, each tenticle has an eye on it Gastropods have no sense of hearing.
Explanation:
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<span>Pulmonary vein
Pulmonary circulation is the movement of blood starting from the heart, where deoxygenated, or carbon dioxide-filled, blood leaves from the right ventricle and through the pulmonary valve, then into the left and right pulmonary arteries and arrives at the lungs. During the process of respiration, the carbon dioxide is released and oxygen is added to the blood. </span>
