The following are effects of food shortage on population size EXCEPT
competition
decline in reproduction
emigration
increase in natality
mortality
Correct answer is D
No explanation has been provided for this answer.
The sun rays reach the earth’s surface by
conduction
convection
radiation
reflection
refraction
Correct answer is C
No explanation has been provided for this answer.
Herbicides are chemicals used to
check the spread of diseases
control dormancy in seeds
control insects
control weeds
control pests
Correct answer is D
No explanation has been provided for this answer.
Translocation of food substances in plants takes place through
collenchyma
parenchyma
phloem
sclerenchyma
xylem
Correct answer is C
No explanation has been provided for this answer.
The biosphere can best be defined as part of the
atmosphere that contains moisture
earth that contains gases
earth that is liquid
earth that supports life
ocean that supports life
Correct answer is D
No explanation has been provided for this answer.