What body structure the penguin survive in its environment? 1. pointed beak 2. body fat 3. webbed feet

I think your answer is B. Body Fat. They have thick skin and and lots of blubber underneath which help to keep them warm in the harsh temperatures.

I believe your answer would be B. & C. Because the penguin need all that fat to keep warm in the harsh weather but also need weeb feet to swim around inthe water to catch fish and other foods that they need to survive.

why do the isotopes of a particular element behave differently in nuclear reactions but the same in chemical reactions? chemical reactions involve changes to electrons in an atom; isotopes do not differ in electrons, and so they react the same way during chemical changes.

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.