An elephant has very few hairs,while a bear has thick fur because the bear:

Tiny free-living animals on the surface of water constitute:

Most animals are tree dwellers in a

Which is the correct order of ecological hierarchy?

What are the various possibilities seen in different organisms to achieve homeostasis? Discuss.

Read the given statements and determine how many of them are incorrect.
$(1)$ Regional and local variations in habitats create a wide variety of biomes.
$(2)$ Temperature,light,and soil are the key elements for the physical and chemical variations in an ecosystem.
$(3)$ Tuna fish are found in the ocean and are classified as warm-blooded and homeothermic animals.
$(4)$ Red algae are found in the deep-sea regions.