a. Competition: Humans compete with all organisms for space.
b. Parasitism: Humans have many parasites: head lice, ticks, tapeworms, etc.
c. Mutualism: We have mutualistic relationships with all domesticated plants/animals.
d. Commensalism: Pigeons thrive in metropolitan ecosystems without really
affecting humans (except for being mildly disgusting).
Answer:
a. Centromere
A centromere is a specialised DNA sequence of a chromosome that links pair of sister chromarids (a dyad)
Answer:
Animals are classified as being multicellular whereas protozoans are microscopic single-celled organisms.
Explanation:
Spread of disease is density dependent because it is more severe the greater the population density as the disease would spread more easily. If there is low population density it would spread slower.
Answer:
A (-7)/(1)
Explanation:
(-7)/(-1) would be a positive 7.
7/1 would be a positive 7.
(-7)/(0) would be 0.
