Answer:
Petal is brightly coloured and scented to attract pollinating insects
Leaf acts as food factory using the energy from sunlight
Roots carry water and nutrients from soil to the plants body and keeps it anchored in the ground
Veins are blood vessels that carries blood towards heart
Stems support for the elevation of leaves,flowers and fruits and also transport fluids between roots and shoots in xylem and phloem
Explanation:
In fetal life, the lungs are not expanded, so most of the blood from the right ventricle is shunted from the pulmonary artery to the aorta through the patent ductus arteriosus. With a few breaths the lungs expand, and blood flows from right ventricle to pulmonary artery into the lungs. Withdrawal of circulating prostaglandin from the mother plus bradykinins released from the expanding lung of the infant cause the ductus to close over a few minutes to hours. The closed ductus remains as the ligamentum arteriosum.
Answer:
In the 1960s, scientists found evidence that new material is indeed erupting along mid-ocean ridges. The scientists dived to the ocean floor in Alvin, a small submarine built to withstand the crushing pressures four kilometers down in the ocean. In a ridge’s central valley, Alvin’s crew found strange rocks shaped like pillows or like toothpaste squeezed from a tube. Such rocks form only when molten material hardens quickly after erupting under water. These rocks showed that molten material has erupted again and again along the mid-ocean ridge.
When scientists studied patterns in the rocks of the ocean floor, they found more support for sea-floor spreading. You read earlier that Earth behaves like a giant magnet, with a north pole and a south pole. Surprisingly, Earth’s magnetic poles have reversed themselves many times during Earth’s history. The last reversal happened 780,000 years ago. If the magnetic poles suddenly reversed themselves today, you would find that your compass needle points south.
Explanation:
I found this somewhere.
Answer: The probability of getting a short winged fruit fly in the F1 generation is 2/4 or 1/2.
Explanation:
By using a monohybrid punnett square you should be able to come to the same answer.
Circadian rhythms ....its just behavior that is repeated over 24 hours
