1. Which of the following could be part of -4pd32y ez lrghok*)z mo41otl fs-a6 the description of a forest habitat on a mo2mt3l s ygp1oo ao6zzdf*r-4)k-he l4untain?
I. The community in the forest.
II. The population of a species.
III. The annual mean rainfall.
IV. The location of the mountain range

  2. Which of the following are conditions requi xebx3kg, (1ky6w-+rjtphdk8p v 6hz1red for coral reef formation in an ocean? z8hpdjx6t-bx6kg131h, w kye( +rpkv
I. Appropriate salinity of the water.
II. The presence of coral grazing species.
III. The annual mean temperature of the ocean between 22 and 27°C.
IV. The depth of the water allows sunlight to reach the reef.

  3. Which one of the following is a correct feature of a tundr9(w .p n.i,2x tvghsj,rovr5na biome but not for a th.xg (on,,j i9.nsv w rpr5vt2aiga biome?

  4. What is the best description of the limits of toleranr 47gvs8 j(zxwi(oz: nce of a species?

(a) Divided leaves

(b) Low stomatal densityp8g sd hn +(9jaisvs3-

(c) Leaves at the top of tall st*x-v;(*y5 efytva jyh ems.

(a) List the two abiotic factors that are the determinants of the type of terres*x+qy)p0 c ea6 ,mbvdftrial bv+ep* ,m)cdq0a6 fxyb iome.

(b) Suggest one example of an area occupied by oo.rovt:n1m;acsctc92e v9-gc 3 9a trne these biomes that may change due to global warming. Suggest a reason why this change mo;t 9aro -c t19s t9vracc.m23cgv :neay happen.

7. Borislava is an ecologist. She is responsible for the vsgd13jjl o:b ;5nej.protected areas of a beach on the Meb j; j :vngd5je3.so1lditerranean coast of Spain. The area is protected because there are populations of rare plants adapted to the sand dune habitat which is a hostile environment for many plant species. The conservation areas are each of approximately 100x50m.

Explain how to carry out a line transect to monitor the distribution of plants in this part of the beach.

8. Outline three ways in which plants avoid7e,o( v3n zwe tr dgv+4ag7rl6 being consumed by herbivorous animal3(d,rer lo+vat nwve7z64g7 g s.