They all have these traits: <span>Cellular organization, Reproduction, Metabolism, Homeostasis, Heredity, Response to stimuli, Growth and development, and <span>Adaptation through evolution.</span></span>
Answer:
If they do not have what they need they will not be able to reproduce or grow.
Explanation:
Answer:
Option D, aortic valve
Explanation:
The location of aortic valve i.e between the aorta and left ventricle, allows it to stop the blood from flowing back into the left ventricle.
The other options are incorrect as -
Pulmonary valve being located between the pulmonary artery and right ventricle, stop the blood from flowing back into the right ventricle.
The tricuspid valve and mitral valve stops the blood from flowing back into the right atria and left atria respectively.
Hence, option D is correct.
If pregnancy among women does not occur, then menstruation occurs. The menstrual cycle usually lasts about 28 days.
<h3>What do women experience during their menstrual period? </h3>
During menstruation, women may experience abdominal cramps, headaches, backache, and nausea.
The stage in which a woman is most fertile is called Ovulation. During this step, an egg is released from the follicle in the ovaries.
If a fertilized egg successfully embeds itself in the uterine lining, then the woman becomes pregnant.
If the fertilized egg does not manage to embed in the uterine lining, then menstruation will occur.
The two main hormones that control the menstrual cycle are estrogen and progesterone. If the egg is not fertilized, then progesterone levels drop.
The estrogen needs to stop FSH to be produced to make sure only one egg matures in the cycle.
Learn more about the menstrual cycle here:
brainly.com/question/1483249
The answer is everything has a connection to earth. So if there is an answer to all of the above that's it. Hope it helps.
