<span>Persentase oksigen di udara di dua mil (3,2 km.) Pada dasarnya sama dengan di permukaan laut (21%). Namun, tekanan udara adalah 30% lebih rendah pada ketinggian yang lebih tinggi karena fakta bahwa atmosfer kurang padat - yaitu, molekul udara yang jauh apart.When kita menghirup udara di permukaan laut, tekanan atmosfer sekitar 14,7 pounds per square inch (1,04 kg. per cm.2)
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A the greater number of progeny that results
Modern day whale species, have very small pelvic bones in comparison to their body size, and also they are useless. This is because this bones in the whale body are remnants from the time when their ancestors were land dwelling creatures, thus they had legs as the typical land mammal has. But during their evolution, as their ancestors were starting to adapt more to the water, the legs started to disappear, but the bones inside of the body remained, even though they were of not use. Even though millions of years had passed since this bone is useless, it still exists, and the reason for that is that there hasn't been any evolutionary pressure for it to not exist, since it is not causing any disadvantage into the movement and lifestyle of the whales.
Answer:
Separating a cell into 2 different parts allows for the creation of specific environments in a cell.
Explanation:
Separating a cell into 2 different parts allows for the creation of specific environments in a cell.One example would be Nuclear Envelope.The nuclear envelope is a double membrane Where the two membranes are separated by space.Another example would be the Endoplasmic Recticulum. The endoplasmic recticulum has two different parts which are the smooth er and the rough er. The smooth er is smooth at the top because it lacks ribosomes.The rought er is rough because it has studded ribosomes on the outer surface of the membrane.
Animal cells do not have cell wall, which prevents an overload of water, therefore can easily burst.
