Answer:
Specific immunity is also called as Acquired immunity and Anamnestic response
2nd option is the answer
lymphocytes recognize, attack and destroy a pathogen
The population of dandelions can be affected boa population of rabbits due to the food web.The rabbits feed on the dandelions therefore decreasing the amount of dandelion in the area
Answer:
Chemical residue remain on the vegetation.
Explanation:
The negative effects of chemical control of weeds on rangelands is that the chemical residue remain on the vegetation in rangeland which is dangerous for animals that feed on vegetation because the chemicals are toxic that cause serious damaged. Sometime the chemical also damaged the weeds as well as vegetation of rangelands and also kill the beneficial insects that is needed by the plants present in rangelands.
Answer:
the chlorophyte group contained extensive genetic variability
