Objective observations are more useful because they are factual and evidence based while subjective observations include emotion and bias.
Answer:
Understanding cardiorespiratory endurance, muscular strength, muscular endurance, flexibility and body composition, known as the Five Components of Fitness, is important for improving health, performance and appearance.
The glands of the endocrine system secrete hormones into the bloodstream to maintain homeostasis and regulate metabolism.
Answer: 2)
A mnemonic device
Explanation: A mnemonic is a tool or memory aid that helps people to remember or memorize things easily. It helps you to remember an idea or phrase with a pattern of letters, numbers, or relatable associations. Mnemonic devices may include special rhymes and poems, acronyms, images, songs, outlines, and other tools. In the question Luke makes up a sentence using the first letter from each base as the first letters for his words, repeating to himself to help him remember more easily the bases of DNA. In other words Luke formed mnemonics using the first letters of the DNA bases to remember them easily.
