Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Noise Pollution - Environmental Pollution
Noise is unwanted sound or excessively high levels of sound. Noise pollution is not only an annoyance, but at sufficiently high levels, it may cause loss of hearing. Noise pollution has grown because of increased use of technology. The main sources of noise are: road traffic, railways, industrial operations, construction work, aircrafts, military artillery and ammunition and household electrical appliances. Sound or noise can affect us because of its loudness and pitch or frequency.
Frequency is the number of cycles per second called Hertz (Hz). For example, a radio station uses certain frequencies for the broadcast. The human ear is sensitive to the sound of frequency in the range of 20 to 2000Hz. Loudness is measured in decibel scale (dB), a tenfold increase in sound intensity is represented as 10 dB increase on scale.
List the four phases of mitosis, and briefly explain what occurs during each phase. Prophase: the chromatin coils and produces chromosomes, the nucleolus and nuclear envelope d
Q. Accessory Food Substances or Vitamins ? Bacteria also vary in their need for vitamins or accessory growth factors. Some microorganisms are unable to synthesize some or all o
Define the Features of Phylum Nematoda? Phylum characteristics of Nematoda which are the world's most abundant multicellular organisms are as follows: 1. Nematodes occur in
Q. What do you mean by Borrowed Materials? For the study of as much relevant material as possible the material is obtained on loan. Borrowed specimens benefit the' lending inst
Define Reagents for Estimation of Calcium Using EDTA Titrimetric Method? 1. Buffer solution: Dissolve 16.9 g NH 4 CI in 143 ml NH 4 OH. To this add 50 ml of solution containing
Terrestrial and Aquatic Ecosystem What is common between a terrestrial and an aquatic ecosystem. Both have similar type of trophic structure. They possess an autotrophic layer
Are the phloem and the xylem made of living cells? The cells of phloem are living cells and the cells that constitute the xylem ducts are dead cells killed by the lignin deposi
Q. What do you mean by Wound closure? Generally the incisions designed for minimal exposure such as the H - shaped incision, do not require suturing, as the abutment and the tr
feeding habit of branchiostoma?
Q. Concerning permeability what type of membrane is the cell membrane? The cell membrane is a selectively permeable membrane that is it allows the passage of water and some sel
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd