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the answer is piaget theory
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Answer:D
Explanation: The pulmonary air sacs of birds only permit a unidirectional flow of air through the lungs. Unidirectional flow means that air is inhale and exhale through one trachea alternatively. This means the bird lungs only receive largely fresh air which has a high oxygen content during inhalation and do not receive fresh during exhalation. While air flow bidirectional in mammals.
Answer:
Jack's house
Explanation:
Point of reference is a point in a space that can be used to tell where other things are positioned. It is also known as the reference point. A simple way to put this is the starting point. As you can see in your example, Jack started from his home and is moving in directions depending on his house's location.
15 types of sharks:
#1 Hammerhead Shark
#2 Wobbegong
#3 Sand Shark
#4 SawShark
#5 Angelshark
#6 Cat Shark
#7 Cow Shark
#8 Brambleshark
#9 Carpet Shark
#10 Alopias
#11 Carcharhiniformes
#12 <span>Heterodontus
</span>
#13 <span>Squaliformes
</span>
#14 Hexanchiformes
#15 Smooth-hound
Sentences:
#1 A Hammerhead shark is a type of shark that comes from the family, Sphyrnidae. These sharks were named for their head shape, <span>which are flattened and laterally extended into a "hammer" shape.
#2 The Wobbegong shark is known as a type of carpet shark and is </span>found mostly in the shallow temperate and tropical waters of the western Pacific Ocean. As well as in the Eastern Indian Ocean.
#3 Sand Sharks come from the Odontaspididae family. These sharks can be found world wide, and mostly in tropical waters. It can also be known as the Sand Tiger Shark in both the US and in the UK.<span>
#4 The Sawshark has a l</span><span>ong, saw-like rostrum edged with sharp teeth. They use this to slash and disable their prey.
#5 An Angelshark contains a flattened body and wide </span><span>pectoral fins, that offten give them a strong resemblance to rays.
#6 The Cat shark can also be refered to as the Bamboo shark. This species finds comfort in swing very close to the ground.
#7 Cow Sharks belong in the </span><span>Hexanchidae family because of their additional pair of gill sets.
#8 The Bramble shark can be found in the </span><span>eastern Pacific Ocean, and in tropical and temperate waters worldwide.
#9 A Carpet shark can commonly be mistaken for a Wobbegong shark, although they can sometimes be the length of a whale shark.
#10 The Alopias shark can also be known as a Thresher shark and has the ability to</span> <span>inhabit both coastal waters and oceans far from land, from the surface to depths of at least 360 meters.
#11 The </span><span>Carcharhiniformes shark can also be known as a ground shark and they can weigh as much as a Bull shark.
#12 The Heterodontus is a bull shark </span><span>that is a small order of basal modern sharks. </span><span>
#13 </span>Sharks in the Swualiformes family, have two dorsal fins, which usually possess spines.
#14 The <span>Hexanchiform shark has only one dorsal fin and six or seven gill slits. This species is extinct.
#15 The Smooth-Hound Shark is narrow finned and is sometimes referred to as the </span>Florida smooth-<span>hound.
Sorry this took me so long to complete. It was a lot!!
Hope this helps!!</span>
