A team of students must design a hand warmer for a project. The hand warmer must reach and maintain a temperature of 35 °C. They decide on a design process.
What steps are missing from the process? Move words and phrases to the blanks to complete the steps of the process.
Requirement
Positive
result
Problem
Create a
hand
warmer
Decide mixture
of chemicals
and fabrics.
Develop a
prototype.
Negative
result
Design new
prototype.
Test.
Retest.
Must reach
and maintain
35 °C
Conduct
background
research.
Decide on
new fabric
or chemicals.

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.

mammal

explanation:

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.