Answer:
By studying the fossil record we can tell how long life has existed on Earth, and how different plants and animals are related to each other. Often we can work out how and where they lived, and use this information to find out about ancient environments. Fossils can tell us a lot about the past.
Explanation:
Answer:
B) increase in number
Explanation:
This is called natural selection. Basically, the organism that has mutated in a way that helps it survive best will pass on that mutation.
Flexibility exercises have been prescribed successfully to treat dysmenorrhea (painful menstruation), general neuromuscular tension (stress) and knots (trigger points) in muscles and fascia. What are the benefits of good flexibility? -enhances quality of life -promotes healthy muscles and joints -greater freedom of movement -makes activities of daily living easier -promotes healthy muscles and joints -Improves elasticity of muscles and connective tissue around --joints, enhancing freedom of movement -Makes activities of daily living (turning, lifting, and bending) much easier to perform -Helps prevent low back and other spinal column problems -Improves and maintains good postural alignment -Promotes proper and graceful body movement -Improves personal appearance and self-image -Helps develop and maintain motor skills throughout life
The events of excitation-contraction coupling in cardiac muscle cells are similar to skeletal muscle cells through electrical activity. <span />
<span>Answer:
Assuming there is enough acetic anhydride available, then both OH groups will be acetylated to give their acetate esters (OCOCH3). Use a drop of sulfuric acid as the catalyst.</span>
