One of the reasons why the fish population remains approximately the same from one generation to the next is because not all the eggs laid will survive to adulthood. There are several factors which bring about elimination of the the newly hatched eggs. Examples of these are predators and diseases which eliminate the young offsprings at different stages before they develop into adulthood.
Secondly, production of many eggs by the different fish species leads to competition for survival. Resources such as water, food, oxygen and shelter have to be fought for and its only the fittests that will be able to survive till the reproduction stage.
The pulmonary circulation conveys blood that is low in oxygen to the lungs before returning back to the left side of the heart.
<h3>The pulmonary circulation</h3>
The circulatory system is divided into two main parts namely:
- pulmonary circulation and
The pulmonary circulation involves the movement of blood between the lungs and the heart.
Blood from the systemic circulation returns to the right side of the heart where it is pumped through the pulmonary artery into the lungs to be oxygenated.
After oxygenation has taken place in the lungs, the blood returns to the left side of the heart through the pulmonary veins.
Learn more about systemic circulation here:
brainly.com/question/811428
Answer:
Glucole
Explanation:
I am not sure if this is what you were asking but yea
Answer:
b. nails instead of claws on their fingers and toes
Explanation:
Primates are a class of mammals in which humans are included. It is a very varied group, ranging from 30 gram lemurs to over 200 kg gorillas.
This group of animals is characterized, among other things, by having five fingers at its ends. They have clavicle, binocular vision, orbits surrounded by bone, etc. The vast majority have nails instead of claws, opposing thumb and vision that captures all colors.
Unfortunately, it is a very threatened order, as 60% of the world's primates could disappear within 25 years. This is all the fault of one species: the human.
The answer might be b....I’m probably wrong but I tried
