• Algae are the primary producers in aquatic food chains.
• They release a lot of oxygen to the atmosphere.
• Some cause human diseases like malaria and amoebic dysentry ,sleeping sickness
• Some are source of food for humans e.g. sargassum is a source of iodine
• Skeletons of diatoms used in paint making.
Wilfykil answered the question on February 28, 2019 at 13:51
-
Explain how predators are adapted to capture their prey
(Solved)
Explain how predators are adapted to capture their prey
Date posted:
February 18, 2019
.
Answers (1)
-
Explain why xylem vessels have dead cells
(Solved)
Explain why xylem vessels have dead cells
Date posted:
February 18, 2019
.
Answers (1)
-
In an experiment, a piece of brain was removed from a rat.It was later found that the rat had large fluctuation of body temperature. Suggest...
(Solved)
In an experiment, a piece of brain was removed from a rat. It was later found that the rat had large fluctuation of body temperature. Suggest the part of brain which had been removed.
Date posted:
February 15, 2019
.
Answers (1)
-
Explain why adenine and thymine have double bond while cytosine and guanine have triple bond
(Solved)
Explain why adenine and thymine have double bond while cytosine and guanine have triple bond.
Date posted:
January 20, 2019
.
Answers (1)
-
Give two importance of respiratory quotient
(Solved)
Give two importance of respiratory quotient.
Date posted:
January 6, 2019
.
Answers (1)
-
Name two classes of phylum arthropoda with cephalothorax
(Solved)
Name two classes of phylum arthropoda with cephalothorax
Date posted:
December 26, 2018
.
Answers (1)
-
State the economic importance of members of Monera and Fungi and for each economic importance name a suitable or appropriate organism
(Solved)
State the economic importance of members of Monera and Fungi and for each economic importance name a suitable or appropriate organism
Date posted:
December 6, 2018
.
Answers (1)
-
Discuss Lamarck’s and Darwin’s theories of evolution
(Solved)
Discuss Lamarck’s and Darwin’s theories of evolution
Date posted:
December 4, 2018
.
Answers (1)
-
Which organelle is most abundant in white blood cell?
(Solved)
Which organelle is most abundant in white blood cell?
Date posted:
November 13, 2018
.
Answers (1)
-
Explain how mammals regulate their body temperature and relate this to their body size
(Solved)
Explain how mammals regulate their body temperature and relate this to their body size
Date posted:
November 7, 2018
.
Answers (1)
-
What are the limitations of dry mass measurement in assessing growth?
(Solved)
What are the limitations of dry mass measurement in assessing growth?
Date posted:
October 21, 2018
.
Answers (1)
-
Why is change in dry mass measurement of an organism the best indicator of growth?
(Solved)
Why is change in dry mass measurement of an organism the best indicator of growth?
Date posted:
October 21, 2018
.
Answers (1)
-
Explain why short distance runners breathe quickly and deeply at the end of a race
(Solved)
Explain why short distance runners breathe quickly and deeply at the end of a race.
Date posted:
October 13, 2018
.
Answers (1)
-
Draw a labeled diagram of mammalian nephron
(Solved)
Draw a labeled diagram of mammalian nephron.
Date posted:
October 10, 2018
.
Answers (1)
-
Draw and label a mammalian skin.
(Solved)
Draw and label a mammalian skin.
Date posted:
October 10, 2018
.
Answers (1)
-
(i)Draw and label a mitochondrion. (ii) State the most important function of mitochondria.iii) Give the functions of the labeled parts.
(Solved)
(i)Draw and label a mitochondrion. (ii) State the most important function of mitochondria.iii) Give the functions of the labeled parts.
Date posted:
October 10, 2018
.
Answers (1)
-
Describe the general layout of the transport system in mammals
(Solved)
Describe the general layout of the transport system in mammals
Date posted:
October 9, 2018
.
Answers (1)
-
Explain how drooping of leaves on a hot sunny day is advantageous to a plant
(Solved)
Explain how drooping of leaves on a hot sunny day is advantageous to a plant.
Date posted:
October 9, 2018
.
Answers (1)
-
Compare the internal structure of a monocotyledonous and dicotyledonous stem
(Solved)
Compare the internal structure of a monocotyledonous and dicotyledonous stem.
Date posted:
October 9, 2018
.
Answers (1)
-
How is a desert camel adapted to survive in the desert conditions?
(Solved)
How is a desert camel adapted to survive in the desert conditions?
Date posted:
October 9, 2018
.
Answers (1)