Write Short Answers To The Questions: Increased blood flow delivers more oxygen and nutrients to the muscles and removes metabolic waste products like carbon dioxide more efficiently. Left ventricle has thicker muscular wall because it needs to generate a much…
Important Definitions: Plains Plain is a broad area of relatively flat land. They cover more than one-third of world’s land area. Grassland Grassland is a region where grass is the main type vegetation. For example, the Indus Plain in Pakistan…
Definition: The Past Perfect Continuous shows an ongoing action that started before another past action and continued up to that point (or had recent effects). Formation: Type Affirmative Interrogative Negative All Verbs Subject + had been + verb-ing Had +…
Definition: The Past Perfect describes an action that was completed before another action or time in the past. It shows “past in the past” — the earlier of two past events. Formation: Type Affirmative Interrogative Negative All Verbs Subject +…
Definition: The Past Continuous describes actions that were in progress at a specific time in the past. It shows ongoing, temporary, or interrupted actions. Formation: Type Affirmative Interrogative Negative All Verbs Subject + was/were + verb-ing Was/Were + Subject +…
Definition: The Simple Past describes completed actions or states in the past at a definite time. Formation: Type Affirmative Interrogative Negative Regular Verbs Subject + verb + -ed Did + Subject + base verb? Subject + did not (didn’t) +…