I believe the answer is D: feeling of exhilaration
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The sliding filament theory is the explanation for how muscles contract to produce force. As we have mentioned on previous pages, the actin and myosin filaments within the sarcomeres of muscle fibres bind to create cross-bridges and slide past one another, creating a contraction.
Answer:
Past continuous tense and past perfect tense
Both past continuous and past perfect continuous tenses can be used to talk about actions or situations that were in progress at a certain point of time in the past. While the past continuous merely shows continuity, the past perfect continuous tense also puts an emphasis on the idea of duration.
Explanation:
Past continuous tense and past perfect tense
Both past continuous and past perfect continuous tenses can be used to talk about actions or situations that were in progress at a certain point of time in the past. While the past continuous merely shows continuity, the past perfect continuous tense also puts an emphasis on the idea of duration.
Answer: Love is a "primary" emotion.
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