Answer:
A.Earth's early atmosphere lacked oxygen, which multicellular organisms need to break apart food
Explanation:
One important feature that led to the development of multicellular organisms was the rise of oxygen-producing photosynthetic bacteria. Prior to this development, the unicellular organisms (anaerobes) then present on Earth obtained energy from inorganic fuels.
However, with the presence of oxygen in the atmosphere, a shift was observed as organisms that could obtain energy from the reduction of energy became predominant. This unicellular aerobes later paved way for the evolution of multicellular aerobes.
Answer:
1. Tertiary Care
Explanation:
Tertiary care is a specialized health care for inpatients over an extended period of time usually on referral by primary or secondary health care personnel, involving contemporary and complex procedures and treatments.
Examples include: Cancer management, complex medical and surgical procedures.
Subacute Care is defined as an inpatient care for someone who has an acute illness. It is treatment administered immediately after acute hospitalization or in some cases, in place of it to treat and provide care for people with medically complex conditions.
Scientific law is the description of an observed phenomenon. it doesn't explain why the phenomenon exists or what causes it and scientific theory is a misconception that theories turn into laws with enough research.
Answer;
Angiosperms are grouped into monocots and dicots.
Explanation;
-Angiosperms are vascular seed plants in which the ovule (egg) is fertilized and develops into a seed in an enclosed hollow ovary. Their ability to flower sets them apart from non-flowering plants, also known as gymnosperms, allowing them a successful means of reproduction.
-Angiosperms can be divided into two categories, Monocotyledons (monocots) and dicotyledons (dicots). This distinction is based on the number of cotyledons, the food storage structures in their seeds. Monocots have one cotyledon while dicots have two.
