$A$ physical place or set of environmental conditions around the organism to which it must adapt to survive and prosper is . . . . . . .

Give scientific reasons: Thermoregulation is more effectively achieved in larger animals than in smaller ones.

Which of the following represents an organism and its ecological niche correctly?

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.

What is the unit formed by the interactions of populations of various species in a given area called?

Temperature regulation is found in