Consider a food chain with 1,000 joules (an energy unit) available at the producer level. If this food chain is grass - > grasshopper - > lizard - > crow, how much energy is found at the level of the crow?

Which of the following is not a neuroglial cell type: a. oligedendrocyte b. neuron c. schwann cell d. microglia e. none of the above

Microfilaments are solid, and they are built from a double chain of actin. explain three examples of movements that involve microfilaments

Why does the lower epidermis have more stomata than the upper epidermis of a leaf?

Why is the earth blue

Bones are linked together at skeletal joints by

Which population would increase most if the insects were eliminated

What mineral is used as a coating for steel?

How do earthquakes at divergent plate boundaries differ from those at convergent plate boundaries? Earthquakes at divergent boundaries are deeper and more severe. Earthquakes at divergent boundaries are almost always larger.

Salvador would like to take a paternity test to determine if he is Pilar's father. He asks Pilar's mother, Antonia, to provide DNA samples for both her and Pilar. Which technique will most likely be used to compare the three DNA samples?

What is not a a form of passive transport