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Lynna [10]
3 years ago
9

what does presence of mesosaurus fossils tell about the initial location and positioning of south america africa antarctica

Biology
1 answer:
IgorC [24]3 years ago
3 0

The answer is that these continents were once joined together in one big continent.

All continents were once connected as one supercontinent Pangea. On that supercontinent, many species lived across all the supercontinent, such as mesosaurus. But after continents spread apart, some populations remained on the different parts of the supercontinent. So, some population ended up on South Aamerica, some on Africa, and some on Antartica. The geological theory that explains how continents move through Earth's surface is called c<span>ontinental drift.</span>

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Answer:

The answers are:

  1. Type 2 (fast twitch) muscle fibers - type A:    b. muscle fibers that help with a long sprint or carry a heavy object a short distance
  2. muscular strength:    d. the muscle's capacity to exert force against resistance
  3. Type 1 (slow twitch) muscle fibers:   a. muscle fibers responsible for endurance
  4. Muscle endurance:    c. refers to the ability to perform a specific muscular action for a prolonged amount of time.
  5. Type 2 (fast twitch) muscle fibers - type B:     e. muscle fibers used in short explosive movements such as jumping or lifting a very heavy weight one or two times.

Explanation:

Types of Skeletal Muscles:

Skeletal muscle are divided into two types:

  1. Slow Twitch (Type 1)
  2. Fast Twitch (Type 2)
  • Slow twitch muscles are the first ones to contract at times of exercise of strenuous physical activity. A compared to fast twitch muscle fibers, they contract slowly but can sustain contraction for a long time.
  • Fast twitch muscle fibers are divided into two subtypes: Type 2A and Type 2B.
  • Type 2A muscle fibers produce a high amount of force but they fatigue rapidly.
  • Type 2B muscle fibers, fire last, produce the most amount of force but wear out very rapidly.

Muscle Characteristics:

  • Muscle endurance is the muscle's ability to contract with force against a resistance for a prolonged time period.
  • Muscle strength is a measure of the amount of force a muscle can produce against resistance.
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