They allow the heart to pump more blood by decreasing the ESV.
Answer:
false
Explanation:
because not every rock has granite in it
Answer:
Because of the difference in surface area to volume ratio
Explanation:
Surface are to volume ratio is the area of an object that is exposed to the external environment (surface area), compared to the amount within an object (volume).
Therefore an elephant has a lower surface area to volume ratio than a mouse.
The smaller an object is the greater its surface area to volume ratio.
Small animals have much more surface area per mass than large animals. With so much surface area, they lose heat very quickly. So, a mouse, with a lot of surface area per mass, must spend a lot more energy to stay warm than a large animal.
Answer:
Bryophytes, lycophytes, ferns, whisk ferns, and horsetails. (Ans. A)
Explanation:
Seedless vascular plants: They are defined as the plants which contains developed specialized tissues known as vascular structure for transportation of nutrients and water. They are known as higher plants because they include from flowering plants to conifer trees (growing seeds) to fern (do not grow seeds).
Seedless vascular plants are divided into four plant divisions:
1) Psilophyta
2) Lycophyta
3) Sphenophyta
4) Pterophyta
Seedless vascular plants includes horsetail and clubmosses, these plants are not producing flowers or seeds. Spores of these plants are very lightweight with the help of this they are disappearing quickly in the wind.
I think it is A. C does not make sence to me. D is wrong because it takes years for these things to happen. Same for B. It would only take hours to dig a trench. I am going With A.
