Q: What is the process where sperm from the pollen of one flower fertilizes the egg of another flower? Read this paragraph and choose the correct option from the provided answers: In cross-pollination , sperm from the pollen of one flower fertilizes the egg of another flower. Like other types of sexual reproduction, cross-pollination allows new combinations of traits. Cross-pollination occurs when pollen is carried by the wind to another flower. It can also occur when animal pollinators, like honeybees or butterflies ( Figure below ), carry the pollen from flower to flower. Choices: - static pollination - inter-pollination - mitosis - cross-pollination A:
cross-pollination

Q: How does heat travel from the sun to the earth? Read this paragraph and choose the correct option from the provided answers: The bonfire from the opening image has a lot of thermal energy. Thermal energy is the total kinetic energy of moving particles of matter, and the transfer of thermal energy is called heat. Thermal energy from the bonfire is transferred to the hands by thermal radiation. Thermal radiation is the transfer of thermal energy by waves that can travel through air or even through empty space, as shown in the Figure below . When the waves of thermal energy reach objects, they transfer the energy to the objects, causing them to warm up. This is how the fire warms the hands of someone sitting near the bonfire. This is also how the sun's energy reaches Earth and heats its surface. Without the energy radiated from the sun, Earth would be too cold to support life as we know it. Choices: - through sound waves - through light waves - secondary radiation from the sun - thermal radiation from the sun A:
thermal radiation from the sun

Q: Q: What is the type of cancer where bone marrow produces abnormal white blood cells? Read this paragraph and choose the correct option from the provided answers: Leukemia is a type of cancer in which bone marrow produces abnormal white blood cells. The abnormal cells can't do their job of fighting infections. Like most cancers, leukemia is thought to be caused by a combination of genetic and environmental factors. It is the most common cancer in children. Choices: - anemia - kidney - liver - leukemia A:
A: leukemia

Question: Q: When the air temperature reaches the dew point, water vapor starts to do what? Read this paragraph and choose the correct option from the provided answers: A: When air temperature reaches the dew point, water vapor starts condensing. It may form dew (as on the spider web in the opening image), clouds, or fog. Dew forms on solid objects on the ground. Clouds form on tiny particles in the air high above the ground. Fog is a cloud that forms on tiny particles in the air close to the ground. Choices: - evaporate - germinate - dissipate - condense A:
Answer: condense

*Question*
Q: Sound is the transfer of energy from a vibrating object in waves that travel through what? Read this paragraph and choose the correct option from the provided answers: Sound is the transfer of energy from a vibrating object in waves that travel through matter. Choices: - light - time - water - matter A:
**Answer**
matter

(Question)
Q: What is the name of the process in which both the system and its environment can return to exactly the states they were in by following the reverse path? Read this paragraph and choose the correct option from the provided answers: Reversible Processes Both isothermal and adiabatic processes such as shown in Figure 15.13 are reversible in principle. A reversible process is one in which both the system and its environment can return to exactly the states they were in by following the reverse path. The reverse isothermal and adiabatic paths are BA and CA, respectively. Real macroscopic processes are never exactly reversible. In the previous examples, our system is a gas (like that in Figure 15.9), and its environment is the piston, cylinder, and the rest of the universe. If there are any energy-dissipating mechanisms, such as friction or turbulence, then heat transfer to the environment occurs for either direction of the piston. So, for example, if the path BA is followed and there is friction, then the gas will be returned to its original state but the environment will notit will have been heated in both directions. Reversibility requires the direction of heat transfer to reverse for the reverse path. Since dissipative mechanisms cannot be completely eliminated, real processes cannot be reversible. There must be reasons that real macroscopic processes cannot be reversible. We can imagine them going in reverse. For example, heat transfer occurs spontaneously from hot to cold and never spontaneously the reverse. Yet it would not violate the first law of thermodynamics for this to happen. In fact, all spontaneous processes, such as bubbles bursting, never go in reverse. There is a second thermodynamic law that forbids them from going in reverse. When we study this law, we will learn something about nature and also find that such a law limits the efficiency of heat engines. We will find that heat engines with the greatest possible theoretical efficiency would have to use reversible processes, and even they cannot convert all heat transfer into doing work. Table 15.2 summarizes the simpler thermodynamic processes and their definitions. Choices: - conductive process - Remote process - Different Process - reversible process A:
(Answer)
reversible process