The most characteristic of the plants which can fulfill is the use of energy, maintain homeostasis,and composed of the cells.
<u>Explanation:</u>
HOMEOSTASIS: It is the property of the living organisms in which the internal system is kept in balance. Plants stay cools in the desert heat through their reflective surface, reduced leaves or the leaves that are parallel to the sun.
USES OF ENERGY: The plant uses the energy of the sun to change the water and the carbon dioxide into the sugar called glucose and it is used by the plants for the energy.
CELLS: It has cell walls, cell membranes, and it is composed of cellulose, pectin, hemicellulose. The cell in the plants varies from species to species.
A radioactive element is an element which is subject to spontaneous degeneration of its nucleus followed by the emission of alpha, beta and gamma particles. All elements with atomic numbers greater than 83 are radioactive.
The given phrases that describe radioactive elements are-
They have a consistent number of particles
- the particles are alpha, beta and gamma particles.
They have a half-life that determines their rate of decay.
Explanation for other options:
Not all elements occur in nature. Radioactive decay rates may not be constant as the decay happens when a radioactive substance emits a particle. It is not possible to predict exactly when a given atom of a substance will emit a particular particle. When the radioactive element release energy and particles, it decays.
Answer:
The enlargement of the scrotum and testes.
Explanation:
So we can protect ourselves from the same virus if it attacks again in the future
