When they are capable of interbreeding to produce a viable/ fertile off-springs.
The nucleus, it is present in eukaryotes but not prokaryotes. Eukaryotes="true" nucleus. Prokaryotes="no" nucleus
The sequence that correctly describes the route that an egg takes through the female reproductive system would be option d. Ovary - Fallopian tube - Uterus. The mature egg is released by the ovary into the Fallopian Tube. Once it is fertilized, it is embedded in the wall of the uterus and this is where the unborn baby develops. If fertilization does not happen, the endometrium is broken down, which results in menstruation.
Answer:
Synaptic cleft
Synaptic cleft may be defined as the space between two neuron and the gap between post synaptic and pre synaptic neuron. This is one of the component of synapse. The signals are transmitted in the form of chemical signal.
Synapse:
Synapse may be defined as the functional contact between two neurons and the gap between two consecutive neuron. This synapse consists of Presynaptic and postsynaptic membrane. The signals can be transmitted in form of electrical and chemical synapse.
The energy of the ecosystem can be best described as option C. The amount of energy entering an ecosystem from the Sun is equal to the amount used by organisms plus the amount lost as heat.
