Lucia spends much time outdoors and has developed freckles on her skin. How can she best prevent more freckles from appearing?

During the first month of development, how many layers of cells make up the embryo? a. 1 b. 2 c. 3 d. 4

{20 points} hello. for my p.e. class i need to interview people about at health and wellness. so answer the questions below. interviewee name: age: gender: job: date and time of interview: 1. what are some major health concerns that you have? 2. are there ways that you know you can monitor and prevent these health concerns (or other concerns like obesity)? 3. how do family members influence your health? if you need to find out more about a specific health issue, what do you do? be specific. (don’t let them say “look on the internet”, because we have already learned that not everything on the internet is reliable! they should tell you a specific site if they use the internet as a source.) 4. what do you think is the biggest health concern facing our country? 5. what are some things that you do to monitor your health? 6. how would you get the word out about this major health concern? 7. how do you think the media influences what concerns we have for our health? 8. what are some future goals involving your health and well being? 9. why is it important to monitor your health, specifically to you? 10. and what influences you stay healthy?

Viruses use the host's machinery to make copies of themselves. however, some human viruses require a type of replication that humans do not normally have. for example, humans normally do not have the ability to convert rna into dna. how can these types of viruses infect humans, when human cells cannot perform a particular role that the virus requires? a) the virus causes mutations in the human cells, resulting in the formation of new enzymes that are capable of performing these roles.b) the viral genome codes for specialized enzymes not in the host.c) the virus infects only those cells and species that can perform all the replication roles necessary.d) viruses can stay in a quiescent state until the host cell evolves this ability.