The salinity in sea water in parts per thousand $(ppt)$ ranges between
$5-15\%$
$30-35\%$
$50-75\%$
more than $100\%$
List the various abiotic environmental factors.
Consider the following four statements $(1-4)$ about certain desert animals such as kangaroo rat.
$(1)$ They have dark colour and high rate of reproduction and excrete solid urine.
$(2)$ They do not drink water, breathe at a slow rate to conserve water and have their body covered with thick hairs.
$(3)$ They feed on dry seeds and do not require drinking water.
$(4)$ They excrete very concentrated urine and do not use water to regulate body temperature.
Which two of the above statements for such animals are true ?
Nature and properties of soil in different places vary due to
Keolado national park is situated at ______ and is famous for ______.