How is the taiga important to birds from other biomes? why can’t the summer birds live in the taiga year round?

Explanation: Taiga is largest biome present on the Earth. It is Russian word for forest. Taiga is important to birds from other biomes as it provides a pleasant climate and proper food when the climatic condition of the biome in the south is not favourable that is that increased temperature and scarcity of food and water. Summer birds cannot live in taiga year around because of its extreme cold environment. The temperature in winter varies form -54 to -1 degree celsius,  which is really cold with lots of snow that is not favourable for the birds.

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.

the answer is d.) homologous; have mammary glands