African elephants are often poached and killed for the ivory tusks. These elephant populations are becoming reduced in size, as their poaching is larger than their population births. Recently, elephants on an African reserve are being born tuskless, and lack the tusks even as adults. Which statement is supported by the description here?
(1 point)
Responses
A DNA mutation caused the elephants to be born with tusks.
A DNA mutation caused the elephants to be born with tusks.
The elephants are being selectively bred to have fewer tusks so that they require less land on the reserve.
The elephants are being selectively bred to have fewer tusks so that they require less land on the reserve.
A DNA mutation caused the elephants to be born tuskless.
A DNA mutation caused the elephants to be born tuskless.
The lack of tusks is a disadvantage to the organism when poaching is common.
The lack of tusks is a disadvantage to the organism when poaching is common.
are u sure
Yes, I am confident that the statement "The lack of tusks is a disadvantage to the organism when poaching is common" is supported by the description provided. Elephants with tusks are targets for poaching because of the high demand for ivory, so being born tuskless could potentially be advantageous in terms of survival in a poaching-prone environment.
Which of these statements best describes how environmental factors affect plant growth?
(1 point)
Responses
Environmental factors have no impact on plant growth; growth is solely determined by the plant's genetics.
Environmental factors have no impact on plant growth; growth is solely determined by the plant's genetics.
All plants grow equally well in any environment.
All plants grow equally well in any environment.
Different plants have different requirements for growth, and environmental factors can either enhance or limit their growth.
Different plants have different requirements for growth, and environmental factors can either enhance or limit their growth.
Plants need sunlight and water to survive, but other environmental factors have no impact on their growth.
Different plants have different requirements for growth, and environmental factors can either enhance or limit their growth.
The image below shows two opposite forces acting on a rope, what can we say is true about the affect of the forces on the rope?
75N <-------> 75N
(1 point)
Responses
It cannot be determined without knowing which person is stronger.
It cannot be determined without knowing which person is stronger.
The forces are balanced. Thus, there is no change in forces acting on the rope and the rope’s motion is not affected.
The forces are balanced. Thus, there is no change in forces acting on the rope and the rope’s motion is not affected.
The forces are not balanced, because one person is standing taller than the other.
The forces are not balanced, because one person is standing taller than the other.
The forces are balanced. But, the forces acting on the rope have increased and the rope’s motion is affected.