Environmental issues

Environmental hum has a sound frequency of

Resistance against environmental stresses increases with the usage of this biofertilizer

Which of these methods is not part environmental pest control

What is D.D.T. ? What are its uses and environmental effects ?

What is freon ? What are its important uses and environmental effects ?

Read the following statements and select the correct options (a) Study of a single individual or a population in relation to environmental is called synecology. (b) Study of a community in relation to environmental is known as autecology

Explain the following terms: (a) Environmental resistance (b) Natality rate (c) Exponential phase

A: Environmental resistance operate to slow down exponential phase in logistic population. R: Crash phase does not occur in this populations.

A : Environmental damage has depleted the ozone layer in the atmosphere. R : Increase in ozone decreases the amount of UV radiation to earth.

Assertion: Velamen is hygroscopic in nature and absorbs environmental moisture. Reason: Velamen is common in orchids which are epiphytes.