Answer:
256.
Explanation:
If a bacterium divides once in every half an hour, it means it will double in half an hour. Hence a number of the bacterium after half an hour will be 1×2=2. After one hour the number of bacterium will be 2×2=4. Similarly, it one and a half hours it will be 4×2=8. In two hours it will be 8×2=16 in two and half hours, it will be 16×2=32. In three hours it will be 32×2=64. In three and half hours it will be 64×2=128. Hence, in 4 (four) hours the number of bacterium will be 128×2=256.
The mantle is very hot. Thickness is 2885km.
Answer:
ion... ions are nagative and positive charge atom
Answer: Synaptic gap
A synaptic gap is the space between two neurons where the axon of a sending neuron communicates with the dendrites of a receiving neuron by using chemical messages.
Explanation:
Neurons are joined end to end in a special way, the axon of one neuron forms a junction with the dendrites of the next neuron. However, the two neurons do not touch, but leave a gap called synaptic gap.
Thus, synaptic gap is the answer.
Answer:Earth's crust is separated into individual plates that float on top of molten material, which causes them to slowly move. Convection currents occur in the atmosphere and oceans.
Explanation:
