Answer:
Natural selection
Explanation:
Natural selection happens naturally, without the influence of humans. In this case, a scientist cross pollinated so it is not natural.
Answer:
D. enter the cell.
Explanation:
The cell surface receptors present at the surface of host cells are used by viruses to enter the cell. During their attachment to the host cell, viruses recognize and bind to the cell surface receptors of the host cells. This is followed by the entry of nucleocapsid or nucleic acid of the virus into the host cell.
In this way, viruses use the cell surface receptors of the host cells during their adsorption to the host cells.
Answer:
Land plants evolved from a group of green algae, perhaps as early as 850mya
C. Because everyone sneezing spreading their germs onto other because is obviously going to cause others to get sick.
Answer:
I calculate the buoyancy force as: Volume of the sphere = Volume of the water displaced (Vdisplaced) = (4/3)πr3. Weight of the displaced water = Buoyancy force (B) = Vdisplaced× density of water.
I hope this is what you needed
