The difference between task and environmental constraints is
a. task constraints are always about objects.
b. environmental constraints could cover a number of different tasks.
c. task constraints are always about rules.
d. task constraints cover a number of different environments.

The table below shows the number of foot bones in some horse fossils.horse fossil recordhorse fossil number of foot bonesp 19q 17r 24s 13ancient horses had more bones in their foot then present-day horses. the present-day horse has 11 foot bones. what is the correct order of evolution of the horse starting from the youngest fossil? a. q p r s b. s r p q c. s q p r d. r p q s

Which of the following is not considered an appendage of the skin? nails glands follicles none of the above

When plants use sunlight to make food, the energy of sunlight is