Answer: 101 neutrons
An element's atomic number is the number of protons in its nucleus. X has 52 protons. The mass number is simply the number of protons AND neutrons in the nucleus. Since 52 is given, it's correct to assume that the remainder consists of neutrons. 153-52 will give you the number of neutrons.
Hope this helps! :)
Answer:
Offspring of a horse and donkey are unable to reproduce.
Explanation:
The biological concept of species states that:
A species is a group of organism with similar characteristics, that can interbreed and have a fertile offspring.
Horse + donkey = mule. A mule is a hybrid and is not fertile.
Answer:
features of living things are -
☆ they can grow and repair
☆ they can respire
☆ they can reproduce
Examples - humans , animals , etc.
hope that helps uhh :)
Replication is when you copy something, and repetition is when you keep doing it over and over again. i hope this helps :-D
