Which statement compares that attractive forces that hold particles together?(a. Metallic bonds and Van der Waals force’s our weakly attractive; covalent and hydrogen bonds are strongly attractive. (b. Metallic and covalent bonds are strongly attractive; hydrogen bonding and Van der Waals force’s are weakly attractive. (c. Covalent bonding and Van der Waals force’s join molecules together; ionic and hydrogen bonding produce compounds. (d. Metallic in covalent bonds or weakly Attractive; hydrogen bonding and Van der Waals force’s are strongly attractive

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.

Which of the following best describes the relationship between glucose and complex molecules such as hormones?

Rachel ate a piece of fruit and happened to drop the seeds in her backyard. after a few weeks, she saw a small plant with flowers growing in the backyard. which group does this plant belong to? a. angiosperms b. gymnosperms c. pteridophytes d. bryophytes e. chytrids