Tapeworms live inside the intestines of humans and eat the food partly digested by humans. in this way, the tapeworm deprives humans of nutrients. what is the name of the relationship that exists between the tapeworms and the humans? (a) commensalism (b) competition (c) mutualism (d)parasitism

The movement of tectonic plates in two different locations is shown below: two blocks labeled location a and location b are shown. at location a the top layer of the block shows two horizontal arrows pointing towards each other. small dunes are shown in the middle between the two arrows. the block labeled b has a vertical line in the middle. on the left of the line there is an arrow pointing down. on the right of the vertical line there is an arrow pointing up which statement is most likely true? subduction may occur in both locations. earthquakes may occur in both locations. subduction may occur in location a only and a volcanic eruption may occur in location b only. an earthquake may occur in location a only and a volcanic eruption may occur in location b only.

Where do homologous chromosomes exchange genetic material through crossing over?               a.  chlorophyll    b.  centrosomes    c.  centromeres    d.  chiasma

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere