71.   The aphids themselves weaken the trees by munching through leaves.

72.   The attack occurred Tuesday, after the brown bear was left tied to a tree by his owner while he went to a nearby shop.

73.   The nest contains a single layer of cells and is attached to a rock or tree by a tiny stalk.

74.   They collected DNA samples from a wide variety of mammals and proceeded to construct evolutionary trees by looking at how similar the species were in five different genes.

75.   You will usually find aphids among ornamental or fruit trees by checking newly-formed leaves and buds.

76.   But it disappeared into a clump of trees by the time experts arrived on the scene.

77.   The cathedral had electricity for the occasion and was richly decorated with two huge Christmas trees by the altar.

78.   The head was found lying under a tree by horrified residents in the Prigorodny suburb southeast of Grozny.