An ecosystem is a geographical area where plants, animals, the landscape and the climate all interact together
Answer:
Experimental set up in the lab.are under the control of the scientist,therefore they can manoeuvre the the surrounding conditions to suit the experimental set up for best results. In addition the lab.environment does not involve the complex interactions or reaction between the set up and the lab. environments, compare to the natural environment.
Natural experimental set up gives accurate results from the interaction of the organisms(e.g animals) under investigation in the natural environments,thus the results obtained are natural interaction of the organisms based on the environmental factors the organism are exposed to.However, the number of organisms are usually large,and therefore great effort is needed to determine the actual cause and effects of the factors affecting the organisms under investigations in this natural environments.
EPIDEMIC: a virus / disease spread across a large community, population or region.
PANDEMIC: an epidemic spread across multiple countries and / or continents.
There is no photo for me to base this off of in your question, but here’s my answer.
Due to over population in the 20th century (over 6 billion people more then the earths capacity rate) it’s not surprising an epidemic has grown to a world wide pandemic. Not to mention travel has become much more accessible with new technologies and motor vehicles, so as the first case of i.e. corona was found in China, it eventually travelled to Europe and then to the US due to excessive traveling.
The enzyme and substrates first join with each other to form a enzyme - substrate complex which then is acted upon by the enzyme to form the product which then detaches from the enzyme.
Explanation:
This is the lock and key hypothesis of the enzyme which states how the enzyme and the substrate specificity takes place. Here it explained that in the first step, the substrate attaches with the enzyme in the specific site that has the complementary structure to that of the substrate, or it has some groups which can temporarily bond with the substrate with the enzyme. This then forms the transient enzyme - substrate complex. This then helps the enzyme to act on the substrate. As the action gets over and the product is formed the product separates from the enzyme.
