adaptations for surviving in a dry environment.
Reptiles and small mammals make up the majority of the wildlife in the desert. According to their geographic
location or climatic conditions, deserts can be divided into four groups: hot and dry, semiarid, coastal, and cold.
A tundra has extremely
inhospitable conditions, with the lowest measured temperatures of any of the
five major biomes with average yearly temperatures ranging from -34 to 12 degrees Celsius (-29 to 54 degrees
Fahrenheit). They also experience short summers, poor soil nutrient quality, and little precipitation, only 15 to
25 centimeters (six to ten inches) annually. Arctic and alpine tundra are the two varieties. The vegetation in the
tundra, which consists of shrubs, grasses, mosses, and lichens, is not very diverse. Permafrost, a frozen layer
beneath the soil's surface, is partly to blame for this. Alpine tundra is found on mountains where the altitude is
too high for trees to survive, and the arctic tundra is found to the north of boreal forests. Any wildlife inhabiting
the tundra must be adapted to its extreme conditions to survive
11
.
Exercise 1: Answer the questions.
1. Where does breathing occur?
2. What substances react during respiration?
3. Where does the lake of photosynthesis occur?
4. What are the photosynthesis' reactants?
5. What role does photosynthesis play?
6. Which two byproducts of photosynthesis are they?
7. What happens in a cell's first stage of respiration?
8. What does photosynthesis aim to accomplish?
9. What crucial plant function produces the oxygen and glucose that sustains us?
10. From where do plants primarily obtain their energy?
Exercise 2: Do the test.
1.
What of the following phrases encompasses everything else in the lists?
a.
Monosaccharide.
b.
Disaccharide
c.
Carbohydrate
d.
Starch
2.
Which of the following claims about unsaturated fats is true? (ii)
a.
Animals and plants both exhibit them more frequently.
b.
The carbon chains of their fatty acids contain double bonds.
c.
In most cases, they become solid at normal temperature.
d.
They have a lower ratio of fatty acid to fat molecules.
3.
Which of the following words includes every other item on the list? (iv)
11
National Geographic online Resource Library
https://education.nationalgeographic.org/resource/five-major-types-biomes
37
a.
Nucleic acid
b.
Purine
c.
Nitrogenous base
d.
Nucleotide
4.
The following are examples of where one amino acid differs from another:
a.
Amino group
b.
Carboxyl group
c.
R-group
d.
Peptide bond