The answer is d I just realized(-_-)
Answer:
Muscles move body parts by contracting and then relaxing. Muscles can pull bones, but they can't push them back to the original position. So they work in pairs of flexors and extensors. The flexor contracts to bend a limb at a joint.
Explanation:
The answer is A - pneumonia
Answer:Exercise and Heart Rate
To achieve both weight loss and increase your fitness, it's best to exercise 45 to 60 minutes 5 times per week. If you are a man, you can find your recommended maximum (or target) heart rate range for exercise by subtracting your age from the number 220.
Answer: B, D, and E.
Explanation:
Birds and reptiles are most closely related, Frogs are more closely related to birds than fish and fish are the most primitive are three statements that are correct because a cladogram is considering a diagram that is used in cladistics.
This type of diagram is there to show relations between organisms and in this case, it is true that birds and reptiles are related most closely, frogs are more closely related to birds and the fish( C is incorrect) is the most primitive( that is why answer A. is not correct).
