As energy is transferred through an ecosystem, not all trophic levels receive the same amount. The marine ecosystem consists of primary producers like phytoplanktons; primary consumers like zooplanktons, krill; secondary consumers like leopard seals; and tertiary consumers like killer whales.
Explanation:
In an oceanic or marine ecosystem, the leopard seals are secondary consumers. They basically feed on the primary consumers. They are eaten up by the tertiary consumers. The prey animals of leopard seal includes primary consumers like small fishes, zooplanktons, coral polyps, krill etc. The energy level in the food web increases in a top to down pattern. The producers which occupy the base level will be with high energy and going up the food web, the energy will decrease subsequently. Leopard seals are huge and eat
Answer:
sexual
Explanation:
there are two types of reproduction,
the boring kind and the fun kind
Uh i mean asexual and sexual
in asexual the DNA is copied pretty much exactly the same so there is no room for improvement so if something suddenly changes the organism dies.
In sexual, The DNA of 2 different organisms are combined and this allows for greater variation in genetic evolution. so if something in the environment happens, the ones with a better genes will survive and reproduce more while the other ones die.
Answer:
eukaryotic cells have true nucleus that's why it's more complex.Prokaryotic cells have false nucleus
Explanation:
Answer:
The correct answers are:
1. closing
2. the ventricles and arteries,
3. a constricted trachea
Lub is the first sound of a heartbeat and is mentioned as S1. It is usually produced due to the closing of tricuspid and and mitral or bicuspid valves present between atria and ventricles.
Tricupsid is located between atrium and ventricle of the right hand side and mitral valve is located between atrium and ventricle of the left hand side. They prevent the back flow of blood from ventricles to their respective atria.
Dub, being the second sound is written as S2. It is produced due to the closing of pulmonary (located between right ventricle and pulmonary artery) and aortic valves (located between left artery and aorta).
These valves prevent the back flow of blood from arteries into the ventricles.
The time between the two sounds is often taken as the measure of the diastole i.e. ventricular filling.
Wheezing refers to a high-pitched sound produced when a person breathes, especially during exhale. It is caused by constriction of the airways or inflammation. It is considered as a symptom of various diseases such as asthma, COPD, allergies, bronchitis etc.
Petiole, hopefully this helps you
