Answer:
D
Explanation:
the littoral zone is close to the shore and is partially submerged with shallow water. It is the uppermost zone of the aquatic water body. It is the part of lakes, rivers, ponds and sea.
Answer:
D.) Helpful variations allow individuals to survive and reproduce better than members who lack these variations.
Explanation:
Variation is one of among the principles of natural selection.
Variations occur naturally thereby favouring some individual groups over the other.
In the above example, the helpful variations naturally select the parents of the offsprings while the other members of the group are disadvantaged.
It’s a nerve cell. A neuron/nerve cell is an electrically excitable cell that communicates with other cells via specialized connections called synapses. It is the main component of nervous tissue in all animals except sponges and placozoa. It had a nucleus that contains genes and contain cytoplasm, mitochondria and other organelles.
The answer is; C
Radioactive waste is dangerous because it continues to decay releasing radioactive elements and harmful electromagnetic radiation that can destroy genetic material – hence cause cancer. The waste, therefore, has to be stored safety, and avoiding any contamination to the environment, and also for long periods of time until there is enough time for decay into less harmful products.
