Option D is the correct answer.
To what extent has the presence of a true coelom in animals changed over the course of evolution?
A coelom is a body cavity that is formed from the mesoderm tissue.
Option D - The presence or absence of a true coelom appears to have changed multiple times during the course of evolution.
Answer:
aleles
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Explanation:
Explanation:
To put in a explanation. Biodiversity is needed to boost ecosystem productivity, allowing any species in the area to have an important role to play.
There are three types of Biodiversity
Genetic
Species
Ecosystem
Just use this info I gave you and put it all together
And here's an example.
A large number of species of plant, means more variety in crops. This is species diversity.
The answer is true.
<span>
Breastfeeding can be used as birth control (any method used to prevent pregnancy) but under special conditions: baby must be 6 months old or younger, the infant must be fully breastfed (eating only breast milk), the mother must not have a period (amenorrhea).</span>
<span>If it loses that 1 electron (0 electrons, 1 proton, 1 neutron) it become an ion that is positively charge because it has more protons than electrons. [Ignore the neutrons] </span>
<span>If it gains an electron (2 electrons, 1 proton, 1 neutron) it becomes an ion that is negatively charge because it has more electrons than protons </span>
<span>A molecule - when 2 or more "different" elements combine or when 2 or more of the "same" elements combine </span>
<span>1 proton 1 electron <----- that is considered to be neutral </span>
<span>3 protons, 3 electrons <----- neutral </span>
<span>5 protons 5 electrons <----- neutral </span>
<span>6 protons, 5 electrons <-- positive ion [more protons than electrons] </span>
<span>5 protons, 8 electrons <--- negative ion [more electrons than protons] </span>
