Which characteristics are not necessarily true of all living things.
movement
heredity
reproduction
homeostasis
sensitivity
metabolism
cells

The correct answer will be movement and reproduction.

Explanation:

Biologists have tried to distinguish the living beings from non-living beings on the basis of certain features and made a list of the characters which are shared by all living beings. these characters are cellular organization, metabolism, reproduction, heredity material, homeostasis, response to stimuli (sensitivity), growth and development and movement.

Although these characters are present in the living organisms some of them are not unique to living things such as movement, growth and reproduction. These characters show exceptions as :

1. Movement: plants do not show movement like animals instead they show pheno-plasticity.

2. Reproduction: some plants and animals are not able to reproduce always like mules, worker-bees and plants with the odd number of chromosomes do not produce reproductive organs always.

Thus, movement and reproduction are the correct options.

"d.) carbon dioxide and hydrogen sulfide"