A frog heart has 3 chambers, 1 ventricle and 2 atria. One atrium (the right) receives deoxygenated blood from the frog's body (in the systemic circulation) and then pumped to the single ventricle wherein it will go to the lungs to be oxygenated. Another atrium (the left) received oxygenated blood from the lungs then pumped to the single ventricle wherein it will go to the systemic circulation. In the single ventricle, some form of mixing of the oxygenated and deoxygenated blood happens but since the frog is a cold blooded animal, the decrease in the concentration of oxygen is deemed superficial.
This advancement allows the frog to live on land using the lungs as the primary organ for oxygenation of the blood.
Answer:
depend on the gator or croc
Explanation:
Based on the marginal propensity to save, MPS , the national income will increase by a maximum of $20 billion.
<h3>What is marginal propensity to save?</h3>
Marginal propensity to save (MPS) is a measure of how savings will change, given a change in income.
Marginal propensity to save is related to marginal propensity to consume, MPC by the formula:
Grom the given value of MPS,
MPC = 1 - 0.25
Therefore, MPC = 0.75
Also, the formula for calculating marginal propensity to consume is given as:
- Marginal propensity, MPC = ΔC/ΔY
Where:
- ΔC is a change in consumption
- ΔY is a change in income
ΔY = ΔC/MPC
ΔY = $15 billion/0.75
ΔY = $20 billion
Therefore, the national income will increase by a maximum of $20 billion.
Learn more about marginal propensity to save at: brainly.com/question/18521055
Planet earth is the only known region of the universe to host life and so the basic criteria for life is based on observations made here. For an entity to be considered a living organism it must contain DNA or some other means of storing genetic information. The second criteria is that it must have some way of extracting nutrients from its surroundings. The organism must be able to respond to environmental stimulus and last but not least it must be able to reproduce.
