Which change is chemical?(1 point)
water undergoing electrolysis
water boiling
water ev...
Which change is chemical?(1 point)
water undergoing electrolysis
water boiling
water evaporating
water freezing
Which number remains unchanged during photosynthesis?(1 point)
the number of glucose molecules
the number of carbon dioxide molecules
the number of carbon atoms
the number of water molecules
In a chemical reaction, which aspect of the reactants changes?(1 point)
atoms
total mass
mass
nuclei
A young snake eats and digests a mouse. The increase in the snake’s mass equals(1 point)
the mass of the mouse minus the mass of waste produced by the snake.
the mass of the mouse plus the mass of waste produced by the snake.
the mass of the mouse.
the mass of the mouse plus the original mass of the snake.
Cellular respiration transforms glucose and oxygen into carbon dioxide, water, and energy.
C6H12O6 + 6O2 → 6CO2 + ?H2O + Energy
Based on the law of conservation of matter, what is the missing coefficient for water?
(1 point)
2
4
6
8
Answers: 2
Biology, 22.06.2019 02:00, gabe3636
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.
Answers: 1
Biology, 22.06.2019 05:30, jfrjtwrg
Diego conducted an experiment to find out what kind of ball bounces the highest when dropped from a five-foot platform. he used a golf ball, a tennis ball, and a soccer ball. he dropped each ball from the balcony once. diego recorded his observations after each drop. what can diego do to best improve the reliability of his results? a) drop each ball from the platform three more times b) record his observations in more than one unit c) write at least two scientific questions after the experiment is complete d) share his results with other people who have done similar experiments you for the !
Answers: 1
Biology, 22.06.2019 15:00, whiteshawn0250
Ineed with a hypothesis my question is can seeds sprout in different locations?
Answers: 1
Biology, 22.06.2019 17:00, newjersey4015
An uncomfortable feeling in the ears when descending in an airplane is caused by changes in air pressure on the: a. inner ear b. middle ear c. eardrum d. hammer/anvil
Answers: 1
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