Q1. 16
17
18
There are three different types of haemoglobin in the blood of an adult human. Each haemoglobin molecule
is composed of four polypeptide chains.
The table shows information about these types of haemoglobin.
Type of
haemoglobin
Percentage
present in the
blood (%)
Types of
polypeptide chain
present
No Calend
Looking good
wide oper
HbA,
,
96
2a and 28
НБА,
3
2a and 26
Hbf
1
2a and 2y
Calculate the ratio of polypeptide chains present in the blood of an adult human.

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)

not sure if this is what you'r looking for nnew= nold

answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.