1,000x2=2,000
2,000x2=4,000
4,000x2=8,000
8,000x2=16,000
Answer: 16,000
In childhood for many organisms, there is a "critical period," which is when important learning of certain skills occurs.
The critical period of language learning is a period in the first few years that is crucial for learning a language (language acquisition). After this period, it becomes harder and harder to learn a new language. This is why some immigrants that immigrate later in their lifetime struggle to completely grasp a new language.
All viruses have is a protein coat and a core of genetic material, either RNA or DNA. Unlike bacteria, viruses can't survive without a host. They can only reproduce by attaching themselves to cells. Unlike bacteria, most viruses do cause disease, and they're quite specific about the cells they attack.
Answer B did this a few ago
They concluded that horses evolved with the emergence of grasslands and an increase of predators. The digits of their early Eocene ancestor evolved into hooves.
