In this case, organisms in the same order are more closely related than the members of the same kingdom.
Hi there!
A prezygotic isolating mechanism is a mechanism that causes something to happen, not allowing the organisms to breed before fertilization. I'll explain each one for you.
A - That is postzygotic because the organisms were not stopped before fertilization. The result is a sterile organism.
B - Again, that is postzygotic because the organism was produced.
C - This is prezygotic! The sperm dying shows that something is in action to prevent fertilization, meaning that it cannot happen.
D - Fertilization was successful, so it is postzygotic.
ANSWER:
C - the sperm dies when it reaches the female tract
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I had to draw a sodium atom so if i remember correctly there are 11 electrons, 11 protons, and 12 neutrons. Cx Hope I helped.
A Personal Experience Timeline helps the writer generate a topic. The writer can use the timeline to see specific moments in their lifetime. The correct answer will be A.
Answer:
15
Explanation:
the atomic number is the number above the symbol. the number below is the atomic mass.