They lay eggs because they don't have the genetics or things in their body to give birth.
Gymnosperms are no longer restricted to moist environments, as are ferns and mosses because they have evolved to produce non-flagellated pollens that do not require water or moisture to reach the egg whereas ferns and mosses have flagellated sperm that needs moisture to swim towards the egg.
Another major evolutionary adaption in gymnosperms is the production of seeds instead of spores since seeds contain their own nutrition in the form of endosperm, seeds can travel large distances through wind or animals and can germinate when they find suitable conditions. Seeds can remain dormant for several years whereas spores have a shorter lifespan.
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Answer:
. A. Look at the microscopic structure of a tumor. = Anatomy
B.Measuring respiratory rate during sleep.= Physiology
C. Measuring blood pressure during exercise. = Physiology
D. Observe a lesion to see if the border is irregular. = Anatomy
Explanation:
As food becomes scarce, monkeys within the same tribe can fight for food resources. This behaviour describes intraspecific competition.
<h3>What is intraspecific interactions?</h3>
Intraspecific competition is a competition between someone from the same species . Theimpact of competition on each individual within the species relies on the type of competition that takes place.
'The competition' may be inactive or active and may result in ovarious outcomes.
Thus, This behaviour describes intraspecific competition.
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The placenta provides oxygen to the baby and excretes carbon dioxide into your bloodstream.
meaning that the baby does not simply absorb oxygen from a women's bloodstream. blood and gas transports occur through the placenta, also the placenta delivers oxygen-rich blood through the umbilical vein not artery
hope this helps
