I think it's A. They have a cell membrane.
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A field habitat vegetated by grass and other non-woody plants (grasslands) is known as a meadow. They are of ecological benefit as they are open, sunny regions, which fascinate and support fauna and flora that could not survive in other conditions.
In the given case, when a fungus colonizes the meadow and destructs the majority of its vegetation, which comprises species of small shrubs and grasses, then this may result in the decline of herbivore species due to lack of vegetation on which they survive, which will eventually result in the reduction of carnivore species, as they feed on herbivores.
The process of reproduction among jellyfish when they release the egg and sperm into the sea, then when it is fertilized, it settles down on the sea floor and grows into a polyp is called fertilization. The correct answer would be option C. In the adult or medusa stage of a jellyfish, they reproduce sexually by releasing the egg and sperm into the water forming a planula.
Answer : In radioactive decay, the half-life is the length of time after which there is a 50% chance that an atom will have undergone nuclear decay. It varies depending on the atom type and isotope, and is usually determined experimentally.
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