. Which of these types of electromagnetic radiation has the lowest energy? a. Radio waves
b. Visible light
c. Gamma rays

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

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

The picture shows a fishing technique called trawling. how might trawling affect marine biodiversity