Vines in a dense forest will grow toward patches of light and up the trunks of tall trees. which of the following best describes this observation? a. the vines are structurally adapted to grow in the light. b. the vines are phototropic. c. the vines have behaviorally adapted this growth for mating. d. the vines hibernate until light reaches them.

Vines need light to survive. The vines exhibit phototropism because they grow toward patches of light and up the tall tree trunks where light penetrates the forest.

ans.

in united states (us), the first leading cause of death for both women and men is heart diseases that leads to more than half of the deaths. heart diseases develop due to narrow arteries, buildup of plaque in blood capillaries that arises difficulties in blood flow.

the second leading cause of deaths in us is cancer that affects individuals of all ages. it develops due to uncontrolled growth and spread of tumor cells, which results in death if the not controlled or treated.

the third leading cause of deaths in us is copd or chronic obstructive pulmonary disease. it includes difficulty in breathing, chest infections, and persistent cough. smocking is a leading cause of copd and around 80% of copd deaths occur due to smoking.

thus, the correct answer is 'option). cancer, copd, and heart disease.'