1. with antibiotic resistance rising, researchers are looking for ways to reduce use of these drugs. some cattle once fed antibiotic-laced food now get probiotic feed that can bolster populations of bacteria in the animal's gut. the idea is that if a large population of beneficial bacteria is in place, then harmful bacteria cannot become established or thrive. which ecological principle is guiding this practice?

the supermassive black hole is in the middle of the galaxy.

answer: angiosperms

dicots

angiosperms are highly evolved plants, they produce seeds which are enclosed within in a carple. these are the largest group of plants on earth. they include trees, shrubs, herbs and small flowering plants. angiosperms exhibit a flowering stage in their life cycle. the flower serves the function of reproduction and fruit formation in majority of angiosperms. dicot is the term used to describe flowering plants that have two seed leaves. dicots are plants which develop seeds which split into two parts called cotyledons. each cotyledon contains one embryo.

here, a small purple flower development indicates that the plant belongs to angiosperms and having two embryonic leaves indicates it belongs to dicots.  

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation: