Learning Task 5 Study the materials inside the box. Choose two materi- als and combine them to make either heterogeneous or homogeneous mix-
tuires
buttons
leaves
vinegar
pasta
spaghetti sauce
food coloring
salt
soil
sugar
FISKARS
water
Heterogeneous
Homogeneous
1.
1.
2.
2.
3.
3.
4.
4.

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.