Which scientist proposed the idea of studying humans as groups rather than as individuals? Lamarck
Darwin
Malthus
Linnaeus

Malthus

Explanation:

He was interested in the idea that the entire human population throughout history had a part that lived in poverty.

It is assumed that the population will grow in areas with a lot of resources until those resources are strained to the point where some residents would have to go without.

Malthus went on to say that factors such as famine, war, and disease in historical populations have worried about the overload crisis it has taken on if left unconfirmed

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.

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.