4. The simple machine shown in the picture is said to hold two pieces of wood better than a nail because
A. It has much more area gripping the wood.
B. It has a smoother surface compared to a nail
C. A nail has much more area gripping the wood
a. Only A is correct
b. Both A and C are correct
c. Only B is correct
d. Only C is correct

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind

Which is the function of the hypothalamus in thermoregulation? answers: -sensor -effector -stimulus -intergrating center it's either a or c i believe