Which of the following agricultural activities has the least harmful effect on the environment ?
applying fertilizers
practicing crop rotation
practicing monocropping
spraying herbicides
spraying pesticides
Correct answer is B
No explanation has been provided for this answer.
adrenaline
insulin
oestrogen
testosterone
thyroxine
Correct answer is A
No explanation has been provided for this answer.
A common characteristic of ALL living things is
gametogenesis
hibernation
photosynthesis
phototropism
respiration
Correct answer is E
No explanation has been provided for this answer.
An organism existing at the colonial level of life is
chlamydomonas
euglena
paramecium
spirogyra
volvox
Correct answer is E
No explanation has been provided for this answer.
Root pressure and the transpiration pull are biophysical processes which account for the
ascent of water into leaves
exchange of gases on leaf surfaces
movement of manufactured food from leaves to storage tissues
opening and closing of stomata
Release of energy from glucose molecules
Correct answer is A
No explanation has been provided for this answer.