Ques: Q: Birds and insects perform what function for flowering plants? Read this paragraph and choose the correct option from the provided answers: Insects and birds pollinate flowering plants, including crop plants. Choices: - condensation - vegetation - irrigation - pollination A:
Ans: pollination

Ques: Q: A solute generally does what to the freezing point of a solvent? Read this paragraph and choose the correct option from the provided answers: A solute generally lowers the freezing point of a solvent, which is called freezing point depression. For example, spreading salt on an icy road melts the ice. Choices: - regulates it - raises it - increases it - lowers it A:
Ans: lowers it

Ques: Q: What type of rain dissolves limestone and marble? Read this paragraph and choose the correct option from the provided answers: Figure below shows some of the damage done by acid rain. Acid rain ends up in soil and bodies of water. This can make them very acidic. The acid strips soil of its nutrients. These changes can kill trees, fish, and other living things. Acid rain also dissolves limestone and marble. This can damage buildings, monuments, and statues. Choices: - carbon - natural - sulfur - acid A:
Ans: acid

Ques: Q: How many amino acids are arranged like "beads on a string" to form proteins? Read this paragraph and choose the correct option from the provided answers: Proteins are nutrients made up of smaller molecules called amino acids . Recall that there are 20 different amino acids arranged like "beads on a string" to form proteins. These amino acid chains then fold up into a three-dimensional molecule, giving the protein a specific function. Proteins have several important roles in the body. For example, proteins make up antibodies, muscle fibers and enzymes that help control cell and body processes. You need to make sure you have enough protein in your diet to obtain the necessary amino acids to make your proteins. Choices: - 15 - 35 - 25 - 20 A:
Ans:
20