Help.. The energy in food is measured in units called Calories.
a. true
b. false
17
If you eat more food than your body uses, you will lose weight.
a. true
b. false
18
Carbohydrates are used primarily to build and repair body parts.
a. true
b. false
19
Ptyalin aids in mechanical digestion.
a. true
b. false
20
Muscles in the walls of the esophagus help bring food from the
mouth to the stomach by peristalsis.
a. true
b. false

16. True

17. False

18. False

19. True

20. True

question: which statement best describes the different properties of metals?

answer: they are shiny and bend without breaking.

since metals have certain characteristics properties, they include the following: they are ductile, malleable, shiny, hard, lustrous, flexible and they are good conductor of heat and electricity. so therefore, metals are not dull and they are not non-flexible as listed. instead, they are shiny and flexible.

hope this , have a good day. c;

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.