Which conditions are possible reasons for declining genetic diversity of a species

What is the best approach to selecting safety equipment for an activity

The skin includes multiples layers. which of the following is not one of the layers of the skin?

Enzo sits with a small group of friends at lunch. lately, he has been very quiet and stays home a lot even though his friends invite him to go places. he likes to play video games in his free time and is slightly overweight. which behavior is a sign that enzo may need professional mental health treatment? a) being overweight b) playing video games c) withdrawing from activities d) having a small group of friends