Pneumatophore roots allow mangroves to gather oxygen from the atmosphere even if the soil or mud their in are flooded. The mud where mangrove grows are anaerobic which has poor in oxygen. Oxygen is vital for the survival of mangroves. Some of these roots erect upward.
John Kay invented the spinning jenny, which increased the production of thread.
The correct option is B.
<h3>What is spinning jenny?</h3>
The spinning jenny is a multi-spindle spinning frame invented by John Kay.
It was one of the great inventions that started the Industrial Revolution in England's textile industry.
This machine was used to spin thread and wool.
It was developed in 1767.
Thus, the correct option is B, John Kay.
Learn more about spinning jenny, here:
brainly.com/question/1642538
Explanation:
The greenhouse effect works much the same way on Earth. Gases in the atmosphere, such as carbon dioxide, trap heat similar to the glass roof of a greenhouse. These heat-trapping gases are called greenhouse gases. ... At night, Earth's surface cools, releasing heat back into the air.
