All these statements are correct about a vein EXCEPT that it
carries blood to the heart
contains blood at low pressure
has no valve
possesses fairly thick walls
usually carries deoxygenated blood
Correct answer is C
No explanation has been provided for this answer.
Which of the following eye defects can be corrected with a bi-focal lens?
Astigmatism
Cataract
Hypermetropia
Myopia
Presbyopia
Correct answer is E
No explanation has been provided for this answer.
The speed of wind can be measured with an instrument called
anemometer
barometer
hygrometer
photometer
thermometer
Correct answer is A
No explanation has been provided for this answer.
ln the process of succession, a climax community is established when
a stable community is achieved
the colonizers accommodate the new corners
the colonizers are wiped out
the first inhabitants settle down
the new corners dominate the original inhabitants
Correct answer is A
No explanation has been provided for this answer.
Soil factors in an ecosystems are referred to as
biotic
climatic
edaphic
physiographic
topographic
Correct answer is C
No explanation has been provided for this answer.